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In these dark, ancient forests lives a creature of legend. | 0:00:14 | 0:00:19 | |
This is not an albino or polar bear, | 0:00:22 | 0:00:25 | |
but a rare North American black bear known as a ghost bear. | 0:00:25 | 0:00:30 | |
This white bear is a mother with two black cubs. | 0:00:33 | 0:00:36 | |
A bear family like this can be found in only one place on Earth. | 0:00:40 | 0:00:44 | |
The rainforest islands on the west coast of Canada. | 0:00:45 | 0:00:48 | |
My name is Jeff Turner and I'm a Canadian wildlife film-maker. | 0:00:51 | 0:00:55 | |
Alongside my own family, I'm heading into this wilderness to tell | 0:00:56 | 0:01:00 | |
the story of these special bears. | 0:01:00 | 0:01:02 | |
There's a lot at stake for this bear family. | 0:01:04 | 0:01:06 | |
They only have a few critical months to find enough food to | 0:01:06 | 0:01:10 | |
survive next winter's hibernation. | 0:01:10 | 0:01:12 | |
And they're not alone. | 0:01:15 | 0:01:16 | |
Hungry wolves... | 0:01:17 | 0:01:20 | |
and much larger bears share their island home. | 0:01:20 | 0:01:23 | |
It's going to take all the skills of this mother bear to get her | 0:01:24 | 0:01:28 | |
cubs through the many challenges they'll face. | 0:01:28 | 0:01:31 | |
This is their remarkable story. | 0:01:33 | 0:01:36 | |
Canada's ghost bears live on the west coast, in an area | 0:01:52 | 0:01:57 | |
known as the Great Bear Rainforest, | 0:01:57 | 0:01:59 | |
part of the world's largest temperate rainforest. | 0:01:59 | 0:02:02 | |
Here, the North Pacific Ocean | 0:02:06 | 0:02:08 | |
meets the coastal mountains of British Columbia. | 0:02:08 | 0:02:11 | |
This is one of the most productive landscapes on the planet, | 0:02:14 | 0:02:18 | |
and the life here is sustained by an abundance of fresh water. | 0:02:18 | 0:02:22 | |
The Great Bear Rainforest shelters thousands of different | 0:02:44 | 0:02:47 | |
species beneath its branches... | 0:02:47 | 0:02:49 | |
..but the one that we've come here to find, the most famous | 0:02:52 | 0:02:55 | |
and elusive, lives deep within the forest. | 0:02:55 | 0:02:59 | |
This isn't my first time I've been here looking for ghost bears. | 0:03:00 | 0:03:04 | |
25 years ago, my wife Sue and I | 0:03:04 | 0:03:07 | |
were the first people to ever make a film about these bears. | 0:03:07 | 0:03:10 | |
We had some amazing experiences and it changed the way | 0:03:13 | 0:03:17 | |
I have understood and worked around bears ever since. | 0:03:17 | 0:03:21 | |
Today, we're heading to a spot | 0:03:23 | 0:03:25 | |
where a ghost bear has been seen in recent years. | 0:03:25 | 0:03:28 | |
Although any bear could be frightened by human presence, | 0:03:30 | 0:03:33 | |
experience has taught me that if you're relaxed, | 0:03:33 | 0:03:36 | |
the chances are the bears will be, too. | 0:03:36 | 0:03:38 | |
And when we find her, this female is just awakening from a long sleep. | 0:03:43 | 0:03:47 | |
White black bears can occur in other places, | 0:03:52 | 0:03:55 | |
but it's one in a million odds, whereas here, | 0:03:55 | 0:03:59 | |
because these bears have been isolated on these islands for | 0:03:59 | 0:04:02 | |
so long, about one in ten black bears are white. | 0:04:02 | 0:04:06 | |
This year, she's come out of the den with two little cubs | 0:04:10 | 0:04:14 | |
that, unlike her, are black. | 0:04:14 | 0:04:16 | |
The genes that create white fur are not always expressed, | 0:04:18 | 0:04:22 | |
and a ghost bear mother is as likely to give birth to black cubs | 0:04:22 | 0:04:25 | |
as she is to white ones. | 0:04:25 | 0:04:27 | |
Getting both her cubs through their first year will be a challenge. | 0:04:33 | 0:04:37 | |
The main risk to cubs comes from other bears and wolves, | 0:04:40 | 0:04:44 | |
so when they're small, she'll keep them back here in the forest. | 0:04:44 | 0:04:48 | |
It's safer here because there's relatively little to eat, | 0:04:51 | 0:04:55 | |
and most animals are out on the coast, | 0:04:55 | 0:04:57 | |
where one of the year's greatest feasts is getting underway. | 0:04:57 | 0:05:02 | |
Hundreds of kilometres of shoreline are covered with sticky, white eggs. | 0:05:04 | 0:05:08 | |
Creatures from around the region are here to take advantage | 0:05:11 | 0:05:15 | |
of the abundant food. | 0:05:15 | 0:05:16 | |
This hungry male bear could easily kill the cubs. | 0:05:17 | 0:05:20 | |
But right now, he seems pretty content | 0:05:23 | 0:05:25 | |
with just licking up the rich eggs. | 0:05:25 | 0:05:27 | |
Wolves are also a threat to the cubs, and they're here, too. | 0:05:33 | 0:05:37 | |
At this time of year, they'll spend hours eating the rich eggs | 0:05:46 | 0:05:50 | |
while trying not to ingest too much of the seaweed underneath. | 0:05:50 | 0:05:53 | |
All these eggs come from Pacific herring | 0:05:57 | 0:05:59 | |
that have come up from deep water to spawn. | 0:05:59 | 0:06:02 | |
Male herring broadcast their sperm into the water, | 0:06:04 | 0:06:08 | |
turning it milky white. | 0:06:08 | 0:06:09 | |
This attracts females to the area, | 0:06:15 | 0:06:18 | |
who deposit their sticky eggs onto the vegetation. | 0:06:18 | 0:06:21 | |
Each female can lay up to 40,000 eggs. | 0:06:22 | 0:06:25 | |
There's a pheromone in the sperm that stimulates both the males | 0:06:26 | 0:06:30 | |
and females into a frenzy of spawning activity. | 0:06:30 | 0:06:34 | |
Herring are the most abundant fish on the coast, | 0:06:36 | 0:06:41 | |
providing rich pickings for any animal that can take advantage. | 0:06:41 | 0:06:45 | |
Like these Steller sea lions. | 0:06:49 | 0:06:51 | |
The big males can eat up to 70kg in a day. | 0:06:52 | 0:06:56 | |
DRAMATIC MUSIC | 0:06:59 | 0:07:01 | |
The herring spawn is one of the most important events of the year... | 0:07:22 | 0:07:26 | |
..but our white bear mother has not been able to take | 0:07:30 | 0:07:32 | |
advantage of this spring feast. | 0:07:32 | 0:07:35 | |
For now, she's continuing to keep her cubs hidden away. | 0:07:35 | 0:07:39 | |
They do seem nervous, | 0:07:44 | 0:07:46 | |
but it's not because there are wolves or other bears around. | 0:07:46 | 0:07:50 | |
We are the first people that these cubs have ever seen... | 0:07:54 | 0:07:57 | |
..and even though these cubs seem shy, | 0:08:01 | 0:08:03 | |
we know what's possible in a relationship | 0:08:03 | 0:08:06 | |
between humans and bears. | 0:08:06 | 0:08:07 | |
25 years ago, we lived side-by-side with the bears of the | 0:08:10 | 0:08:14 | |
Great Bear Rainforest, when our daughter Chelsea was just a baby. | 0:08:14 | 0:08:18 | |
SHE BABBLES | 0:08:18 | 0:08:20 | |
We quickly came to realise that these bears had never | 0:08:22 | 0:08:25 | |
encountered people before. | 0:08:25 | 0:08:27 | |
Over time, we were able to gain their trust, | 0:08:28 | 0:08:31 | |
so that they were comfortable allowing us | 0:08:31 | 0:08:34 | |
close enough to get a special view of their world. | 0:08:34 | 0:08:36 | |
Growing up with bears as her neighbours became normal to Chelsea. | 0:08:40 | 0:08:44 | |
-CHELSEA: -I don't remember being here as a child, | 0:08:46 | 0:08:48 | |
but the experience must have rubbed off on me, | 0:08:48 | 0:08:51 | |
because today, I feel instinctively comfortable around bears. | 0:08:51 | 0:08:55 | |
It's really special to be able to share this again with my dad, | 0:08:55 | 0:08:59 | |
only this time, I know how lucky I am to have such close, | 0:08:59 | 0:09:02 | |
personal encounters with bears. | 0:09:02 | 0:09:04 | |
Looking at her, this mother bear seems thin. | 0:09:08 | 0:09:12 | |
She needs to build herself up | 0:09:12 | 0:09:13 | |
if she's going to get her cubs through their first summer. | 0:09:13 | 0:09:16 | |
Black bear mothers produce milk that is 30% fat, | 0:09:21 | 0:09:25 | |
some of the richest milk of any land animal in the world. | 0:09:25 | 0:09:28 | |
And she's had to do this with only plants to eat. | 0:09:31 | 0:09:34 | |
Since coming out of the den, she's been slowly losing weight. | 0:09:36 | 0:09:40 | |
She needs high-protein food, | 0:09:42 | 0:09:45 | |
but she'll have to wait until the salmon arrive. | 0:09:45 | 0:09:48 | |
Waiting in the forest does offer her | 0:09:55 | 0:09:57 | |
and her cubs continued sanctuary, but it must be hard to stay back | 0:09:57 | 0:10:01 | |
from the coast, where the pickings are much richer. | 0:10:01 | 0:10:04 | |
Other inhabitants of these islands can take full advantage | 0:10:07 | 0:10:11 | |
of what this place has to offer. | 0:10:11 | 0:10:13 | |
The Great Bear Rainforest lies adjacent to the | 0:10:17 | 0:10:20 | |
North Pacific Ocean, one of the richest in the world. | 0:10:20 | 0:10:23 | |
The wolves have readily adapted to life in this marine environment. | 0:10:26 | 0:10:30 | |
They are more sea wolves than timber wolves. | 0:10:33 | 0:10:36 | |
They are genetically distinct from their cousins on the mainland | 0:10:39 | 0:10:42 | |
and are incredible swimmers. | 0:10:42 | 0:10:45 | |
They've been seen travelling up to 12km between islands. | 0:10:45 | 0:10:49 | |
SOMBRE MUSIC | 0:10:50 | 0:10:52 | |
Most of the food these wolves eat comes from the sea, | 0:11:06 | 0:11:11 | |
but they also eat bears. | 0:11:11 | 0:11:12 | |
A wolf pack kills at least one or two bears a year | 0:11:14 | 0:11:18 | |
in the Great Bear Rainforest. | 0:11:18 | 0:11:20 | |
There's a good reason the mother bear prefers the forest, | 0:11:20 | 0:11:24 | |
even though there's less to eat. | 0:11:24 | 0:11:26 | |
But with summer's imminent arrival, | 0:11:30 | 0:11:32 | |
she shouldn't have to wait much longer for a decent meal. | 0:11:32 | 0:11:35 | |
Millions of salmon are migrating from their distant offshore | 0:11:38 | 0:11:42 | |
feeding grounds, returning to the rivers where they were born, | 0:11:42 | 0:11:46 | |
to spawn and then die. | 0:11:46 | 0:11:48 | |
Many will swim hundreds of kilometres inland, | 0:11:54 | 0:11:58 | |
deep into the heart of the forest. | 0:11:58 | 0:12:00 | |
And for some, it will mean they have to travel underground. | 0:12:07 | 0:12:11 | |
Underlying huge parts of the coast is a type of bedrock that is | 0:12:14 | 0:12:19 | |
so porous and permeable that water flowing on the surface | 0:12:19 | 0:12:23 | |
will suddenly disappear into a hole. | 0:12:23 | 0:12:25 | |
The water flows underground, often for kilometres, | 0:12:29 | 0:12:33 | |
before re-emerging again, sometimes in a completely different valley. | 0:12:33 | 0:12:38 | |
In these regions, known as karst landscapes, | 0:12:41 | 0:12:45 | |
salmon may have to travel through many of these underground | 0:12:45 | 0:12:48 | |
river systems to reach their spawning grounds. | 0:12:48 | 0:12:51 | |
The water that flows through this special bedrock becomes very | 0:12:53 | 0:12:57 | |
alkaline and carries nutrients leached from the rocks. | 0:12:57 | 0:13:01 | |
Ideal for salmon. | 0:13:01 | 0:13:03 | |
This salmon creek is fairly small, but it's full of fish. | 0:13:08 | 0:13:12 | |
This could be a great spot to set up and wait for the mother bear... | 0:13:14 | 0:13:18 | |
..even though there are other bears here already. | 0:13:20 | 0:13:23 | |
This huge male is one of the biggest black bears I've ever seen. | 0:13:29 | 0:13:33 | |
He must be the dominant bear on the creek, | 0:13:33 | 0:13:35 | |
and could be a real problem for a mother bear with cubs. | 0:13:35 | 0:13:38 | |
There is at least a dozen bears that use this creek, | 0:13:40 | 0:13:43 | |
so I'm not sure our mother will make an appearance. | 0:13:43 | 0:13:46 | |
The salmon only have a few weeks to spawn before they die, | 0:13:50 | 0:13:55 | |
but many won't get the chance. | 0:13:55 | 0:13:57 | |
Those white paws definitely belong to a ghost bear... | 0:14:03 | 0:14:06 | |
..and I'm relieved to see that it's the mother bear. | 0:14:10 | 0:14:13 | |
She has been lured from the forest by the chance of a good meal. | 0:14:13 | 0:14:17 | |
This will be the first salmon she's tasted in almost a year. | 0:14:22 | 0:14:26 | |
Hopefully, the first of many. | 0:14:26 | 0:14:28 | |
But she's left her cubs behind in the forest. | 0:14:35 | 0:14:38 | |
Although they'll be alone, with all the other bears on the creek, | 0:14:39 | 0:14:43 | |
it's probably the right call. | 0:14:43 | 0:14:45 | |
There are so many salmon here, | 0:14:50 | 0:14:52 | |
it's almost like she doesn't know where to start. | 0:14:52 | 0:14:55 | |
PLAYFUL MUSIC | 0:14:56 | 0:14:58 | |
And it looks like she's not going to settle for just one. | 0:15:18 | 0:15:21 | |
I've never seen a bear with one salmon in its mouth | 0:15:29 | 0:15:32 | |
trying to catch another. | 0:15:32 | 0:15:34 | |
She's either really experienced, or very hungry. | 0:15:34 | 0:15:37 | |
Right now, it's still too risky to bring the cubs to the salmon... | 0:15:45 | 0:15:49 | |
..instead it looks like she's taking the salmon to the cubs. | 0:15:58 | 0:16:03 | |
It didn't take me long to learn that the mother bear | 0:16:06 | 0:16:09 | |
liked to eat her salmon beneath a particular tree | 0:16:09 | 0:16:12 | |
that the cubs were often in. | 0:16:12 | 0:16:15 | |
So I was able to set up a remote camera right there | 0:16:15 | 0:16:18 | |
to observe what the cubs thought of their first salmon. | 0:16:18 | 0:16:22 | |
One cub was quick to the dinner table, | 0:16:22 | 0:16:25 | |
but the other was definitely a little more cautious. | 0:16:25 | 0:16:29 | |
And he seemed far more curious about my camera, | 0:16:35 | 0:16:38 | |
than about the fresh salmon his mother brought him to eat. | 0:16:38 | 0:16:42 | |
While the mother bear seems | 0:16:56 | 0:16:58 | |
completely unconcerned by my camera, | 0:16:58 | 0:17:01 | |
she has other worries. | 0:17:01 | 0:17:02 | |
Keeping the cubs in the forest | 0:17:02 | 0:17:05 | |
will really limit her fishing-time. | 0:17:05 | 0:17:08 | |
Soon she is going to have to risk bringing them to the creek. | 0:17:08 | 0:17:12 | |
And she doesn't wait long. | 0:17:16 | 0:17:19 | |
With no other bears around, | 0:17:19 | 0:17:20 | |
she makes the move. | 0:17:20 | 0:17:22 | |
This is a big moment in the cubs' lives. | 0:17:24 | 0:17:26 | |
She's got to be careful, though, | 0:17:28 | 0:17:30 | |
another bear could turn up at any moment. | 0:17:30 | 0:17:33 | |
The cubs are a bit nervous being out in the creek, | 0:17:41 | 0:17:44 | |
and they know they have to stick close to her wherever she goes. | 0:17:44 | 0:17:48 | |
While there are still lots of salmon around, | 0:18:07 | 0:18:10 | |
the mother bear can be selective with what she eats. | 0:18:10 | 0:18:13 | |
She takes a bite of this salmon... | 0:18:14 | 0:18:17 | |
and then drops it. | 0:18:17 | 0:18:19 | |
She can probably tell from the taste it's a male. | 0:18:19 | 0:18:22 | |
Bears need to target the richest, most nutritious food source. | 0:18:24 | 0:18:28 | |
What she really wants to find are female salmon... | 0:18:28 | 0:18:32 | |
..and she'll go out of her way to catch one. | 0:18:34 | 0:18:36 | |
Female salmon are loaded | 0:18:39 | 0:18:41 | |
with thousands of brightly coloured, nutrient-rich eggs. | 0:18:41 | 0:18:45 | |
This is the best part of the salmon, | 0:18:48 | 0:18:50 | |
high in calories and fat... | 0:18:50 | 0:18:53 | |
and she doesn't want to leave any behind. | 0:18:53 | 0:18:56 | |
The cubs, though, still need to learn | 0:19:04 | 0:19:06 | |
which are the best parts to eat. | 0:19:06 | 0:19:08 | |
Though the cubs are still nursing, | 0:19:15 | 0:19:17 | |
they need these protein-rich salmon as much as their mum does. | 0:19:17 | 0:19:21 | |
The whole family has to put on as much weight as possible | 0:19:25 | 0:19:28 | |
before winter hibernation. | 0:19:28 | 0:19:30 | |
The mother bear is always alert to potential dangers to her cubs. | 0:19:37 | 0:19:41 | |
Surprisingly, it's another ghost bear. | 0:19:42 | 0:19:45 | |
This one looks like a large male. | 0:19:45 | 0:19:47 | |
The cubs know that when another bear is around, | 0:19:50 | 0:19:53 | |
they have to get out of there. | 0:19:53 | 0:19:55 | |
They retreat to the safety of the trees. | 0:19:55 | 0:19:57 | |
The mother bear is much smaller than him, | 0:20:01 | 0:20:03 | |
but she's still going right after him. | 0:20:03 | 0:20:06 | |
I'm not sure that's such a good idea - | 0:20:08 | 0:20:10 | |
he could certainly do some damage to her. | 0:20:10 | 0:20:13 | |
And he doesn't seem much deterred by her approach. | 0:20:14 | 0:20:17 | |
That's a risky move on her part. | 0:20:33 | 0:20:35 | |
Any time two bears physically interact like that, | 0:20:35 | 0:20:38 | |
there's a good chance one of them could be hurt. | 0:20:38 | 0:20:41 | |
They're very powerful animals. | 0:20:41 | 0:20:42 | |
I don't know her character well enough yet to decide | 0:20:44 | 0:20:47 | |
if she's foolhardy or brave. | 0:20:47 | 0:20:49 | |
Only time will tell. | 0:20:51 | 0:20:52 | |
But her cubs knew what to do in this situation - | 0:20:54 | 0:20:57 | |
they knew that their best defence was to get up as high into a tree, | 0:20:57 | 0:21:02 | |
as quickly as possible. | 0:21:02 | 0:21:05 | |
Bear cubs always seem so at ease in these big trees, | 0:21:08 | 0:21:12 | |
so far off the ground. | 0:21:12 | 0:21:13 | |
They'll use their teeth as well as their claws | 0:21:20 | 0:21:23 | |
to hang on and move around. | 0:21:23 | 0:21:25 | |
The mother bear seems to have won the day, | 0:21:37 | 0:21:40 | |
but these encounters with other bears will be stressful for her. | 0:21:40 | 0:21:44 | |
She wisely decides to take her cubs back into the safety of forest. | 0:21:48 | 0:21:53 | |
With the arrival of the salmon, | 0:21:57 | 0:21:59 | |
the mother bear may also have to worry about the resident wolf packs. | 0:21:59 | 0:22:03 | |
Wolves on this coast are known to catch salmon in these streams. | 0:22:05 | 0:22:10 | |
It's lucky for her the ocean provides such a bounty | 0:22:15 | 0:22:19 | |
that the wolves seem content to spend their time | 0:22:19 | 0:22:22 | |
patrolling the shoreline. | 0:22:22 | 0:22:24 | |
And they find a dead sea lion that has washed up onto shore. | 0:22:34 | 0:22:38 | |
The whiter wolf is the old grandmother of the pack. | 0:22:44 | 0:22:47 | |
Her teeth aren't strong enough | 0:22:47 | 0:22:49 | |
to chew through the tough, rubbery hide, | 0:22:49 | 0:22:51 | |
as this younger wolf is starting to do. | 0:22:51 | 0:22:54 | |
For now, the old wolf must scavenge the beach for smaller prey. | 0:23:07 | 0:23:11 | |
THEY HOWL | 0:23:14 | 0:23:16 | |
Wolves use howls to communicate. | 0:23:16 | 0:23:18 | |
When they find food they alert the other pack members to the discovery. | 0:23:20 | 0:23:25 | |
The abundance of food from the ocean means that these sea wolves | 0:23:32 | 0:23:36 | |
can survive on just 60 square kilometres, | 0:23:36 | 0:23:40 | |
whereas wolves inland can range well over 1,000. | 0:23:40 | 0:23:44 | |
This is a real bonanza for them - | 0:23:47 | 0:23:49 | |
many kilos of fat-rich meat - | 0:23:49 | 0:23:52 | |
and it will feed the pack for a week or more. | 0:23:52 | 0:23:56 | |
Eventually, even the old grandmother wolf gets her chance to feed. | 0:24:02 | 0:24:07 | |
The younger pack members have peeled back the hide | 0:24:09 | 0:24:12 | |
and the heat from the sun has softened the carcass | 0:24:12 | 0:24:15 | |
so she is able to eat her fill. | 0:24:15 | 0:24:17 | |
While the summer sun has helped this old wolf get a meal, | 0:24:19 | 0:24:22 | |
it brings tougher times for some of the other residents | 0:24:22 | 0:24:26 | |
of the Great Bear Rainforest. | 0:24:26 | 0:24:28 | |
Water levels on the creek are dropping, | 0:24:30 | 0:24:32 | |
and it's getting harder for the bears to catch salmon. | 0:24:32 | 0:24:35 | |
The salmon can't make it up and over the falls now... | 0:24:38 | 0:24:41 | |
..so they hole up in the remaining deepwater pools. | 0:24:43 | 0:24:46 | |
The bears keep trying... | 0:24:50 | 0:24:52 | |
but salmon are very deep difficult to catch in deep water. | 0:24:52 | 0:24:55 | |
Chelsea and I are going to set up our underwater camera | 0:25:05 | 0:25:09 | |
in one of the pools to get a salmon's-eye view. | 0:25:09 | 0:25:13 | |
We wanted to test a theory about why ghost bears are so prevalent here. | 0:25:13 | 0:25:17 | |
We want to find out if white bears catch more fish than black ones. | 0:25:19 | 0:25:23 | |
There's new research that indicates they can catch 30% more salmon | 0:25:24 | 0:25:27 | |
during the day than black bears, | 0:25:27 | 0:25:29 | |
because their white fur | 0:25:29 | 0:25:31 | |
is less visible against the sky. | 0:25:31 | 0:25:33 | |
This would give them a distinct survival advantage. | 0:25:33 | 0:25:36 | |
Salmon have excellent vision - surprisingly similar to humans. | 0:25:42 | 0:25:46 | |
We need to place the camera | 0:25:48 | 0:25:50 | |
so that it's just the right spot to see the bears against the sky. | 0:25:50 | 0:25:53 | |
My dad asks me to do my best bear imitation! | 0:25:55 | 0:25:59 | |
Once we are happy with the camera replacement, | 0:26:05 | 0:26:08 | |
we just have to wait. | 0:26:08 | 0:26:10 | |
It's not long before a black bear arrives. | 0:26:12 | 0:26:14 | |
From the salmon's perspective, | 0:26:18 | 0:26:20 | |
he seems to blend in very well against the trees. | 0:26:20 | 0:26:23 | |
He even makes a lucky catch. | 0:26:26 | 0:26:28 | |
On this narrow creek, the forest obscures most of the sky above... | 0:26:34 | 0:26:38 | |
..then I see our mother bear approaching. | 0:26:39 | 0:26:42 | |
She seems to stand out even more against the trees | 0:26:45 | 0:26:48 | |
than the black bear. | 0:26:48 | 0:26:49 | |
But she still makes a successful catch. | 0:26:53 | 0:26:56 | |
Later we pointed the camera more towards the sky | 0:27:02 | 0:27:05 | |
and she did seem better camouflaged. | 0:27:05 | 0:27:07 | |
It wasn't a very scientific test, | 0:27:08 | 0:27:11 | |
but I think a bear's fishing ability | 0:27:11 | 0:27:13 | |
is as much to do with its age and experience, | 0:27:13 | 0:27:15 | |
as it does with its fur-colour. | 0:27:15 | 0:27:17 | |
The more time we get to spend around this bear, | 0:27:24 | 0:27:27 | |
the more we are learning about her skills. | 0:27:27 | 0:27:29 | |
So far, she's managed to catch lots of fish and keep her cubs safe. | 0:27:29 | 0:27:34 | |
But the busiest and most important part of the salmon season | 0:27:36 | 0:27:39 | |
is still to come. | 0:27:39 | 0:27:40 | |
While the mother bear lives on these islands year-round, | 0:27:45 | 0:27:49 | |
there are other creatures that only come for a visit. | 0:27:49 | 0:27:53 | |
These are North Pacific humpback whales... | 0:28:09 | 0:28:11 | |
..and 25 years ago you rarely saw them on this coast. | 0:28:13 | 0:28:17 | |
Today, there are about 2,000 that spend the summer on BC's coast. | 0:28:20 | 0:28:25 | |
The humpbacks feed by lunging sideways into the water... | 0:28:29 | 0:28:33 | |
..gulping down millions of tiny krill in massive mouthfuls. | 0:28:34 | 0:28:38 | |
The humpbacks share their summer feeding grounds | 0:28:46 | 0:28:48 | |
with Steller sea lions. | 0:28:48 | 0:28:50 | |
GURGLING, BARKING GROWLS | 0:28:50 | 0:28:52 | |
The juvenile sea lions | 0:29:00 | 0:29:01 | |
are very curious about their giant neighbours. | 0:29:01 | 0:29:04 | |
Filming at sea level, it wasn't clear exactly what was going on. | 0:29:07 | 0:29:12 | |
Were the sea lions trying to feed around whales, | 0:29:12 | 0:29:15 | |
or were they trying to play with them? | 0:29:15 | 0:29:17 | |
We just couldn't tell. | 0:29:17 | 0:29:19 | |
By using our small remote-control aerial camera, | 0:29:21 | 0:29:25 | |
my son Logan was able to capture | 0:29:25 | 0:29:27 | |
a bird's-eye view. | 0:29:27 | 0:29:28 | |
With the footage from above, we could see that the sea lions | 0:29:40 | 0:29:43 | |
were taking turns swimming closer and closer to the humpbacks - | 0:29:43 | 0:29:46 | |
like dare-devilish teenagers. | 0:29:46 | 0:29:49 | |
And we could see now that the humpbacks were clearly not happy | 0:29:51 | 0:29:55 | |
with the sea lions' antics. | 0:29:55 | 0:29:56 | |
This tail side-swiping is a sign of aggression in whales. | 0:29:58 | 0:30:02 | |
For the sea lions, it's a dangerous game - | 0:30:06 | 0:30:09 | |
a smack from a humpback's tail would be deadly. | 0:30:09 | 0:30:12 | |
The humpbacks slap the water with their pectoral fins and tails | 0:30:17 | 0:30:21 | |
in an effort to drive off the pesky sea lions. | 0:30:21 | 0:30:24 | |
While the humpbacks have made a remarkable recovery, | 0:30:33 | 0:30:37 | |
on this part of the coast, their future is far from secure. | 0:30:37 | 0:30:40 | |
There are plans to ship oil and gas in massive tankers | 0:30:44 | 0:30:48 | |
right through the heart of the Great Bear Rainforest. | 0:30:48 | 0:30:51 | |
Humpbacks have no biosonar capacities | 0:30:53 | 0:30:56 | |
and are therefore very vulnerable to collisions with large ships. | 0:30:56 | 0:30:59 | |
The traffic in these waters | 0:31:03 | 0:31:04 | |
is expected to climb more than 100-fold | 0:31:04 | 0:31:08 | |
if the planned pipelines and tanker depots get built. | 0:31:08 | 0:31:11 | |
It's not just whales that may be impacted... | 0:31:14 | 0:31:17 | |
..these rich, coastal waters provide foraging opportunities | 0:31:18 | 0:31:22 | |
for lots of other wildlife. | 0:31:22 | 0:31:23 | |
Sea birds like these gulls, loons and guillemots | 0:31:24 | 0:31:27 | |
are all here to take advantage of the schools of young herring | 0:31:27 | 0:31:31 | |
living in these inland waters. | 0:31:31 | 0:31:33 | |
The guillemots are expert underwater hunters. | 0:31:36 | 0:31:39 | |
They can easily dive up to 100 metres. | 0:31:40 | 0:31:44 | |
Herring will avoid swimming through bubbles. | 0:31:48 | 0:31:51 | |
The guillemots take advantage of this to corral the herring | 0:31:51 | 0:31:55 | |
and drive them up to the water's surface. | 0:31:55 | 0:31:57 | |
The trails of bubbles are air trapped in the guillemots' feathers | 0:32:01 | 0:32:05 | |
and squeezed out by the water pressure as they dive. | 0:32:05 | 0:32:08 | |
The guillemots remain underwater for several minutes as they herd | 0:32:11 | 0:32:15 | |
the frenzied herring into bigger and bigger bait balls. | 0:32:15 | 0:32:18 | |
Forming a bait ball is the herrings' last-ditch defence. | 0:32:23 | 0:32:27 | |
With the guillemots pushing them up from below, | 0:32:30 | 0:32:33 | |
the herring are driven to the surface | 0:32:33 | 0:32:35 | |
where the gulls have been waiting to attack. | 0:32:35 | 0:32:38 | |
Many dive into the bait ball to try and make a catch. | 0:32:44 | 0:32:47 | |
But some try a different technique... | 0:32:53 | 0:32:55 | |
Piracy! | 0:32:58 | 0:32:59 | |
These feeding frenzies don't last long, though, | 0:33:14 | 0:33:18 | |
the herring eventually escape diving deep out of reach | 0:33:18 | 0:33:22 | |
of these surface predators. | 0:33:22 | 0:33:24 | |
Back on the salmon creek, | 0:33:27 | 0:33:29 | |
the water is low and the mother bear is spending more time | 0:33:29 | 0:33:33 | |
out here with her cubs scavenging salmon carcasses. | 0:33:33 | 0:33:37 | |
Fishing is tough right now. | 0:33:38 | 0:33:39 | |
What's nice to see is how increasingly tolerant | 0:33:46 | 0:33:50 | |
she's becoming of us. | 0:33:50 | 0:33:52 | |
She just goes about her day like we're not even here. | 0:33:52 | 0:33:54 | |
This is because the people she has met before | 0:34:02 | 0:34:05 | |
have treated her well. | 0:34:05 | 0:34:07 | |
We're collaborating with local bear guide | 0:34:07 | 0:34:10 | |
Marvin Robinson, a member of the Gitga'at First Nation. | 0:34:10 | 0:34:14 | |
He spent a lot of time | 0:34:17 | 0:34:19 | |
among the white bears in his traditional territory, | 0:34:19 | 0:34:22 | |
protecting them and guiding photographers and tourists | 0:34:22 | 0:34:25 | |
to see them. | 0:34:25 | 0:34:26 | |
He has treated the bears with respect and tolerance. | 0:34:30 | 0:34:33 | |
This has really helped us establish a relationship | 0:34:39 | 0:34:42 | |
with this mother bear. | 0:34:42 | 0:34:43 | |
She is so comfortable in our presence - | 0:34:44 | 0:34:47 | |
she'll even take a nap right in front of us. | 0:34:47 | 0:34:50 | |
In fact, she's looking so relaxed it's actually a little worrying. | 0:34:53 | 0:34:58 | |
While she doesn't need to be concerned with us, | 0:34:58 | 0:35:01 | |
she still does need to watch out for other bears. | 0:35:01 | 0:35:04 | |
At least the cubs are up in a tree. | 0:35:06 | 0:35:08 | |
If she wants to avoid a close encounter with another bear, | 0:35:11 | 0:35:14 | |
she needs to literally sleep with one eye open. | 0:35:14 | 0:35:17 | |
And this is what I was worried about. | 0:35:30 | 0:35:33 | |
This big male doesn't know the mother bear | 0:35:38 | 0:35:40 | |
is asleep on the other side of the tree. | 0:35:40 | 0:35:42 | |
His sudden appearance startles her. | 0:35:51 | 0:35:53 | |
LOUD GROWLING | 0:35:53 | 0:35:56 | |
She has no idea of his intentions. | 0:35:56 | 0:35:58 | |
LOW GROWLING | 0:36:05 | 0:36:07 | |
She is very upset by how close he got | 0:36:11 | 0:36:14 | |
and reacts with real aggression. | 0:36:14 | 0:36:16 | |
GROWLING CONTINUES | 0:36:26 | 0:36:29 | |
This is just the sort of encounter | 0:36:38 | 0:36:40 | |
that most mother bears try to avoid. | 0:36:40 | 0:36:43 | |
It was a dangerous situation for her to get yourself into. | 0:36:48 | 0:36:52 | |
She is lucky the big male didn't fight back. | 0:36:56 | 0:36:59 | |
He's so much bigger than her | 0:36:59 | 0:37:01 | |
that one swipe of his paw could've injured or even killed her. | 0:37:01 | 0:37:05 | |
For bears at this time of year, | 0:37:10 | 0:37:12 | |
the stakes are high. | 0:37:12 | 0:37:14 | |
And the next morning brings a stark reminder of just how high. | 0:37:14 | 0:37:18 | |
It's a little male black bear. | 0:37:21 | 0:37:23 | |
He was most likely killed in a fight with another bear - | 0:37:24 | 0:37:28 | |
possibly the big male. | 0:37:28 | 0:37:29 | |
Competition for salmon can be fierce and, occasionally, fatal. | 0:37:32 | 0:37:36 | |
The presence of this dead bear | 0:37:41 | 0:37:43 | |
appears to have really upset the mother. | 0:37:43 | 0:37:45 | |
She needs the salmon, | 0:37:47 | 0:37:48 | |
but the risk to her cubs is too high to stay out on the creek right now. | 0:37:48 | 0:37:52 | |
Luckily, this stressful situation is about to change. | 0:37:56 | 0:37:59 | |
The autumn rains finally arrive after a long, dry summer. | 0:38:04 | 0:38:08 | |
This place is called the Great Bear Rainforest for a reason - | 0:38:11 | 0:38:15 | |
more than three metres of rain falls on these forests every year. | 0:38:15 | 0:38:19 | |
It is one of the wettest places in the northern hemisphere. | 0:38:21 | 0:38:24 | |
This huge influx of fresh water | 0:38:31 | 0:38:33 | |
cascades off the rocky mountain slopes | 0:38:33 | 0:38:36 | |
filling the streams and creating surging waterfalls. | 0:38:36 | 0:38:40 | |
Rising water levels | 0:38:51 | 0:38:53 | |
mean that the salmon that have been trapped in shallow water, | 0:38:53 | 0:38:55 | |
can now continue their migration upstream. | 0:38:55 | 0:38:58 | |
But the higher water means that it can sometimes take 24 hours | 0:39:02 | 0:39:06 | |
and dozens of attempts | 0:39:06 | 0:39:08 | |
for them to leap a single waterfall. | 0:39:08 | 0:39:10 | |
The salmons' efforts are made even more challenging | 0:39:21 | 0:39:24 | |
by the presence of hungry black bears. | 0:39:24 | 0:39:26 | |
These two bears are very skinny. | 0:39:34 | 0:39:36 | |
They've both been drawn to the falls | 0:39:36 | 0:39:38 | |
in a desperate attempt to catch one of the leaping salmon. | 0:39:38 | 0:39:42 | |
But they have to be in exactly the right position, | 0:39:49 | 0:39:52 | |
just a little bit off the mark | 0:39:52 | 0:39:54 | |
and they won't catch a thing. | 0:39:54 | 0:39:56 | |
This bear knows he needs a better position to fish, | 0:39:58 | 0:40:02 | |
but there is a real danger - | 0:40:02 | 0:40:03 | |
a fall into this surging water could be fatal. | 0:40:03 | 0:40:07 | |
Not only does he have to stand in this fast water, | 0:40:38 | 0:40:40 | |
but he has to be secure enough to reach for leaping fish. | 0:40:40 | 0:40:44 | |
The other bear needs to get closer, | 0:41:06 | 0:41:08 | |
but there's no place for him to stand. | 0:41:08 | 0:41:11 | |
They are so close... | 0:41:22 | 0:41:24 | |
And yet, just out of reach. | 0:41:24 | 0:41:25 | |
The bear on the other side of the fall looks on in vain... | 0:41:33 | 0:41:36 | |
He is just too high above the water. | 0:41:36 | 0:41:38 | |
But this bear's precarious position finally pays off. | 0:41:40 | 0:41:44 | |
With water levels up on the creek, | 0:41:57 | 0:41:59 | |
the salmon are able to push further upstream | 0:41:59 | 0:42:02 | |
and the bears have more opportunities to catch them. | 0:42:02 | 0:42:06 | |
With higher water, the mother bear has moved to the falls | 0:42:11 | 0:42:14 | |
where the salmon are most active. | 0:42:14 | 0:42:17 | |
But the big male has taken over the best fishing spot. | 0:42:17 | 0:42:20 | |
She needs to keep herself safe, | 0:42:23 | 0:42:25 | |
but she also needs access to salmon. | 0:42:25 | 0:42:28 | |
She cautiously moves closer to the big male. | 0:42:31 | 0:42:33 | |
She's probably still a little unsure of him | 0:42:36 | 0:42:38 | |
after their last encounter. | 0:42:38 | 0:42:40 | |
There's lots of salmon swimming through the falls now, | 0:42:45 | 0:42:48 | |
but with big male so close by, | 0:42:48 | 0:42:50 | |
she can't really move around as freely as she needs to. | 0:42:50 | 0:42:54 | |
The big male has control of the best fishing site. | 0:43:18 | 0:43:22 | |
But due to the closeness of the mother bear, | 0:43:22 | 0:43:24 | |
he also seems to be losing some of his focus. | 0:43:24 | 0:43:27 | |
MALE BEAR GROWLS | 0:43:27 | 0:43:30 | |
Then he manages to grab another salmon. | 0:43:31 | 0:43:34 | |
However, this one is a male, and he lets it go. | 0:43:36 | 0:43:39 | |
The mother bear is less fussy right now, | 0:43:41 | 0:43:43 | |
but she's unable to take advantage of the opportunity. | 0:43:43 | 0:43:46 | |
Neither bear is very happy with the presence of the other. | 0:43:48 | 0:43:51 | |
The mother bear decides to move in | 0:43:55 | 0:43:57 | |
and take advantage of the scraps the big guy's left behind. | 0:43:57 | 0:44:00 | |
The big male seems annoyed by her presence so close behind him. | 0:44:10 | 0:44:13 | |
Something has to give. | 0:44:18 | 0:44:20 | |
At this rate, neither bear is going to be successful. | 0:44:20 | 0:44:23 | |
The mother is getting more confident... | 0:44:31 | 0:44:35 | |
growling at the big male, | 0:44:35 | 0:44:37 | |
letting him know she wants him out of there. | 0:44:37 | 0:44:40 | |
Finally, she builds up the nerve to storm his position. | 0:44:43 | 0:44:46 | |
GROWLING | 0:44:48 | 0:44:50 | |
LOW, SUSTAINED GROWLING | 0:44:55 | 0:44:58 | |
Even though she's much smaller than him, she's not backing down. | 0:45:02 | 0:45:06 | |
She wants access to the salmon more than he does. | 0:45:06 | 0:45:09 | |
The big male tries to intimidate her with his much larger size... | 0:45:14 | 0:45:17 | |
..but she holds her nerve - refusing to leave. | 0:45:20 | 0:45:23 | |
Finally, the big male's had enough, | 0:45:29 | 0:45:31 | |
and moves on to other fishing grounds. | 0:45:31 | 0:45:34 | |
Now the mother bear has the falls all to herself. | 0:45:40 | 0:45:43 | |
This has been a hard-won salmon, | 0:45:49 | 0:45:50 | |
but I think there's going to be lots more where this came from now. | 0:45:50 | 0:45:54 | |
Watching her these past months | 0:45:57 | 0:45:59 | |
I've really been impressed by how well she's done | 0:45:59 | 0:46:02 | |
for herself and her family. | 0:46:02 | 0:46:04 | |
She's a committed mother, who will do what it takes | 0:46:04 | 0:46:07 | |
to provide for her cubs and keep them safe. | 0:46:07 | 0:46:10 | |
As winter approaches, they should be in good shape for hibernation. | 0:46:11 | 0:46:15 | |
But she still had one more surprise in store for me. | 0:46:20 | 0:46:23 | |
On the very last day of filming, | 0:46:26 | 0:46:28 | |
she allows me to get the camera close enough to her cubs | 0:46:28 | 0:46:32 | |
to see the world through the eyes of an individual bear. | 0:46:32 | 0:46:35 | |
25 years ago, when Sue and I first came here, | 0:46:40 | 0:46:43 | |
we had never before been in a place where the wildlife allowed us | 0:46:43 | 0:46:47 | |
to get so immersed in their world. | 0:46:47 | 0:46:49 | |
It's been such a privilege to be able to come back here | 0:46:59 | 0:47:03 | |
all these years later | 0:47:03 | 0:47:04 | |
and have the opportunity to see even closer into the world of bears. | 0:47:04 | 0:47:08 | |
It's a testament to just how special the Great Bear Rainforest is - | 0:47:13 | 0:47:18 | |
this temperate rainforest right next to | 0:47:18 | 0:47:20 | |
the cold, rich North Pacific Ocean | 0:47:20 | 0:47:22 | |
combine to make this a unique environment full of life. | 0:47:22 | 0:47:27 | |
And nowhere else on the planet | 0:47:32 | 0:47:34 | |
can you find a family of bears like this. | 0:47:34 | 0:47:37 | |
With such a great role model to follow, | 0:47:41 | 0:47:44 | |
I don't think these cubs will have any trouble | 0:47:44 | 0:47:47 | |
eventually making their own way on these islands they call home. | 0:47:47 | 0:47:51 | |
As a wildlife film-maker | 0:48:00 | 0:48:02 | |
I've had the opportunity to film all around the world, | 0:48:02 | 0:48:05 | |
but coming back here to the Great Bear Rainforest with my family | 0:48:05 | 0:48:09 | |
reminds me again what a unique and extraordinary place this is. | 0:48:09 | 0:48:14 | |
There's nowhere like it in the world | 0:48:16 | 0:48:18 | |
and it needs to be celebrated and protected. | 0:48:18 | 0:48:21 | |
There is such richness and diversity everywhere you look, | 0:48:23 | 0:48:27 | |
but during our filming we discovered | 0:48:27 | 0:48:29 | |
that it still had some amazing secrets to reveal. | 0:48:29 | 0:48:32 | |
The Great Bear Rainforest on the west coast of Canada, | 0:48:46 | 0:48:49 | |
is a huge, largely intact, wilderness | 0:48:49 | 0:48:52 | |
74,000 square kilometres in size. | 0:48:52 | 0:48:55 | |
British Columbia contains one fourth | 0:48:57 | 0:48:59 | |
of all the temperate rainforests left on Earth. | 0:48:59 | 0:49:02 | |
It's a forested archipelago of thousands of islands, | 0:49:03 | 0:49:06 | |
fjords and inlets. | 0:49:06 | 0:49:08 | |
What makes this place so unique | 0:49:08 | 0:49:10 | |
is the fact that it's adjacent to the rich North Pacific Ocean. | 0:49:10 | 0:49:14 | |
The sea here supports an abundance of life. | 0:49:17 | 0:49:20 | |
Harbour seals spend all year here feeding. | 0:49:20 | 0:49:23 | |
Surf scoters... | 0:49:27 | 0:49:29 | |
..and the aptly named goldeneye ducks, | 0:49:30 | 0:49:33 | |
travel here to feed on the abundant fish. | 0:49:33 | 0:49:36 | |
During our past visits | 0:49:43 | 0:49:45 | |
we've always focused our filming efforts on the land, | 0:49:45 | 0:49:47 | |
but there's an incredibly rich world beneath the surface. | 0:49:47 | 0:49:51 | |
Kelp thrive in these cold fast-moving waters. | 0:49:53 | 0:49:56 | |
It's one of the fastest-growing plants on Earth | 0:49:56 | 0:50:00 | |
and can reach up to 30 metres in height. | 0:50:00 | 0:50:02 | |
This is the first time we've taken our cameras underwater | 0:50:04 | 0:50:07 | |
to film the kelp forests. | 0:50:07 | 0:50:09 | |
And for the seals that lived here, | 0:50:11 | 0:50:13 | |
they were just as curious of our cameras as we were of them. | 0:50:13 | 0:50:17 | |
Each kelp strand provides a habitat for up to 200 species | 0:50:29 | 0:50:33 | |
and tens of thousands of individual creatures. | 0:50:33 | 0:50:36 | |
When we first filmed here 25 years ago, | 0:50:37 | 0:50:39 | |
there were no sea otters in this part of the central coast. | 0:50:39 | 0:50:43 | |
They were hunted to extinction | 0:50:43 | 0:50:45 | |
all along British Columbia's coast. | 0:50:45 | 0:50:48 | |
A small number were reintroduced about 40 years ago | 0:50:48 | 0:50:50 | |
and the richness of this environment | 0:50:50 | 0:50:52 | |
has allowed the population to grow to more than 5,000 today. | 0:50:52 | 0:50:56 | |
They are re-colonising areas of the coast | 0:50:58 | 0:51:00 | |
that have not had sea otters for 100 years. | 0:51:00 | 0:51:03 | |
Another success story on this coast | 0:51:03 | 0:51:06 | |
has been the arrival of the Pacific white-sided dolphin. | 0:51:06 | 0:51:08 | |
These agile hunters can reach speeds of up to 40km an hour. | 0:51:10 | 0:51:14 | |
25 years ago, they were virtually non-existent here. | 0:51:16 | 0:51:20 | |
Now, about 20,000 are making these inshore waters their home. | 0:51:20 | 0:51:25 | |
The productivity of life beneath the sea, | 0:51:27 | 0:51:29 | |
is directly linked to that of the forest above. | 0:51:29 | 0:51:32 | |
Along the boundary between the sea and the forest, | 0:51:39 | 0:51:42 | |
sandhill cranes arrive to spend the summer. | 0:51:42 | 0:51:45 | |
CROAKING CALLS | 0:51:46 | 0:51:49 | |
Pairs return from California every year to breed | 0:51:49 | 0:51:53 | |
and raise their young in this rich forest environment. | 0:51:53 | 0:51:56 | |
Their distinctive resonant cry can carry up to 5km. | 0:51:56 | 0:52:00 | |
These temperate forests harbour a greater abundance of life | 0:52:04 | 0:52:07 | |
than any other type of forest on earth. | 0:52:07 | 0:52:10 | |
A big part of the reason for this | 0:52:18 | 0:52:20 | |
is due to what's happening beneath the surface. | 0:52:20 | 0:52:23 | |
It has to do with the way water flows through, | 0:52:25 | 0:52:28 | |
and even beneath, this forest. | 0:52:28 | 0:52:30 | |
Many of the trees grow on the permeable karst bedrock. | 0:52:38 | 0:52:42 | |
Here the land is so soft and fractured, | 0:52:42 | 0:52:44 | |
that water flowing on the surface | 0:52:44 | 0:52:46 | |
can suddenly disappear through a hole in the ground. | 0:52:46 | 0:52:49 | |
Down here there are many kilometres of underground tunnels and chambers | 0:52:51 | 0:52:55 | |
that the water flows through. | 0:52:55 | 0:52:57 | |
It's this water that's the key to the forest's success. | 0:53:03 | 0:53:07 | |
Wherever this soluble karst bedrock occurs, | 0:53:08 | 0:53:11 | |
the trees grow to incredible heights. | 0:53:11 | 0:53:14 | |
The soil that develops on top of this bedrock is well-drained, | 0:53:19 | 0:53:23 | |
so the tree roots don't get waterlogged. | 0:53:23 | 0:53:25 | |
If the soil was removed you could see | 0:53:27 | 0:53:29 | |
the convoluted and cracked surface of the bedrock | 0:53:29 | 0:53:33 | |
that the rainwater flows through. | 0:53:33 | 0:53:34 | |
This type of carbonate bedrock is rich in nutrients. | 0:53:37 | 0:53:40 | |
The eroding rainwater carries these nutrients | 0:53:41 | 0:53:44 | |
throughout the karst system feeding the trees. | 0:53:44 | 0:53:48 | |
And this makes them highly prized by timber companies. | 0:53:50 | 0:53:53 | |
Many of them, especially on Vancouver Island, | 0:54:00 | 0:54:03 | |
have already been logged. | 0:54:03 | 0:54:04 | |
When the trees are cut down, | 0:54:11 | 0:54:13 | |
the thin topsoil is vulnerable. | 0:54:13 | 0:54:15 | |
If a fire occurs, | 0:54:17 | 0:54:18 | |
this soil can be washed away exposing the bare karst rock below. | 0:54:18 | 0:54:21 | |
It could take hundreds of years before a site recovers. | 0:54:23 | 0:54:26 | |
I was keen to document life beneath these forests. | 0:54:41 | 0:54:43 | |
It's an important part of the salmons' story. | 0:54:43 | 0:54:46 | |
Filming in these underground rivers | 0:54:48 | 0:54:50 | |
was something that had never been attempted before, | 0:54:50 | 0:54:53 | |
and I knew I needed help to make it happen. | 0:54:53 | 0:54:55 | |
Whoa! | 0:55:02 | 0:55:04 | |
So, let's put it down there, try to run it through the tunnel. | 0:55:04 | 0:55:07 | |
If it doesn't fit, we'll leave it back on the left, then assemble it | 0:55:07 | 0:55:10 | |
and we can just form a little line in. | 0:55:10 | 0:55:12 | |
Travelling light today. | 0:55:14 | 0:55:16 | |
'The first challenge was getting hundreds of kilograms | 0:55:17 | 0:55:20 | |
'of diving and underwater camera gear into the caves.' | 0:55:20 | 0:55:23 | |
Put it just below you, and then we'll stage everything down to here. | 0:55:23 | 0:55:26 | |
All this for one shot! | 0:55:32 | 0:55:33 | |
THEY LAUGH | 0:55:33 | 0:55:36 | |
'This was no place for anyone who might suffer with claustrophobia!' | 0:55:36 | 0:55:39 | |
Go ahead of me there. | 0:55:39 | 0:55:41 | |
That's a bit of a squish, isn't it? | 0:55:44 | 0:55:46 | |
-It's quite exciting. -OK. -Yeah. | 0:55:46 | 0:55:48 | |
'This was a first for all of us. | 0:55:50 | 0:55:51 | |
'We were exploring a hidden world.' | 0:55:51 | 0:55:54 | |
It's an amazing experience being under here. | 0:55:54 | 0:55:57 | |
These formations you just had no idea existed here. | 0:55:57 | 0:56:00 | |
'Once we got through the narrow part of the cave, | 0:56:00 | 0:56:03 | |
'it opened up into larger chambers.' | 0:56:03 | 0:56:05 | |
During the wet season, these tunnels can fill with water. | 0:56:08 | 0:56:12 | |
But eventually, we arrived at this underground lake, | 0:56:13 | 0:56:16 | |
where we heard the salmon had been seen in the past. | 0:56:16 | 0:56:19 | |
This is one of the deepest freshwater cave dives in Canada. | 0:56:21 | 0:56:25 | |
The water is connected to the river that flows above ground, | 0:56:27 | 0:56:30 | |
so fish like this sculpin can move in and out of the caves. | 0:56:30 | 0:56:34 | |
For the dive team, this is a cause for concern. | 0:56:35 | 0:56:38 | |
I heard that the current can get up to eight knots | 0:56:38 | 0:56:41 | |
in certain places here. That's way too strong to swim against. | 0:56:41 | 0:56:44 | |
It looks OK, Alex? | 0:56:48 | 0:56:50 | |
I think it looks good. | 0:56:50 | 0:56:53 | |
'Once the guys decided the current was safe, they were in the water, | 0:56:53 | 0:56:56 | |
and their camera gear was lighting up this dark underwater world. | 0:56:56 | 0:56:59 | |
It didn't take long until the salmon showed up, | 0:57:03 | 0:57:06 | |
drawn to the sudden appearance of light. | 0:57:06 | 0:57:08 | |
This is the first time that salmon have been filmed | 0:57:10 | 0:57:13 | |
in these underground karst caves. | 0:57:13 | 0:57:15 | |
While the salmon may have to navigate these cave systems, | 0:57:20 | 0:57:23 | |
the water here offers them something extra. | 0:57:23 | 0:57:27 | |
Thanks to the alkaline karst bedrock, | 0:57:27 | 0:57:29 | |
the water here is particularly rich in nutrients and aquatic insects | 0:57:29 | 0:57:33 | |
offering rich pickings to hungry salmon. | 0:57:33 | 0:57:35 | |
Research in Alaska shows that salmon living in karst streams | 0:57:38 | 0:57:41 | |
tend to be larger and more numerous than in other rivers. | 0:57:41 | 0:57:45 | |
It's become clear to me that the karst landscapes | 0:57:48 | 0:57:51 | |
of the Great Bear Rainforest | 0:57:51 | 0:57:53 | |
are vitally important to the animals that make their home here. | 0:57:53 | 0:57:56 | |
But it's also a fragile landscape. | 0:57:58 | 0:58:00 | |
Without stronger protection for these karst regions, | 0:58:00 | 0:58:03 | |
we may lose a key component | 0:58:03 | 0:58:05 | |
of what makes the Great Bear Rainforest | 0:58:05 | 0:58:08 | |
such a rich and diverse wilderness. | 0:58:08 | 0:58:10 | |
And home to some very special wildlife. | 0:58:13 | 0:58:15 |