0:00:02 > 0:00:04This is a special edition of Deadly 60.
0:00:04 > 0:00:07You might think that because all the animals we feature are deadly
0:00:07 > 0:00:10that they can take care of themselves, but that's not the case.
0:00:10 > 0:00:13Tough as they are, there's an awful lot of Deadly 60 animals
0:00:13 > 0:00:15that are facing a real struggle for survival.
0:00:17 > 0:00:19My name's Steve Backshall.
0:00:24 > 0:00:27I'm on a mission to find the Deadly 60.
0:00:27 > 0:00:28Ow!
0:00:28 > 0:00:30That's 60 deadly creatures from around the world.
0:00:32 > 0:00:35You're coming with me every step of the way.
0:00:35 > 0:00:37Ow!
0:00:46 > 0:00:49Some of my best memories from this series are of animals
0:00:49 > 0:00:51that despite their deadly reputation,
0:00:51 > 0:00:53are in serious trouble.
0:00:55 > 0:00:58The threats each of these animals face are very different,
0:00:58 > 0:01:03but the one thing they have in common is that they're all manmade.
0:01:11 > 0:01:12Oh, cool.
0:01:15 > 0:01:17Sharks have been the stars of this series.
0:01:17 > 0:01:19There are four species on the list
0:01:19 > 0:01:23and there could have been many more.
0:01:23 > 0:01:26Surprisingly they're in real trouble
0:01:26 > 0:01:29and even face the threat of extinction.
0:01:29 > 0:01:32Some sharks are wrongly perceived as man-eaters
0:01:32 > 0:01:33and that is part of the problem.
0:01:36 > 0:01:39Anybody who thinks that sharks are genuinely dangerous to humans
0:01:39 > 0:01:41should know that last year in 2007
0:01:41 > 0:01:44only one person worldwide was killed by sharks.
0:01:44 > 0:01:48In that same amount of time, around 70 million sharks
0:01:48 > 0:01:49were killed by people.
0:01:51 > 0:01:5370 million. Just think about that for a second.
0:01:54 > 0:01:58That's like every single person living in the UK
0:01:58 > 0:02:01being wiped out every year.
0:02:02 > 0:02:06You'd be forgiven for thinking that we're deliberately trying
0:02:06 > 0:02:09to exterminate every shark on Earth.
0:02:09 > 0:02:14But, no, actually, all this destruction is about a soup.
0:02:15 > 0:02:17Quite a lot of soup.
0:02:17 > 0:02:20It's called shark fin soup.
0:02:20 > 0:02:24So no prizes for guessing what it's made out of.
0:02:24 > 0:02:27The crazy thing is that shark fins themselves
0:02:27 > 0:02:29don't add any taste whatsoever.
0:02:29 > 0:02:32The fins are simply added for texture.
0:02:33 > 0:02:36But it is a status symbol in some cultures.
0:02:36 > 0:02:39There are millions of people that want to eat it.
0:02:41 > 0:02:44Even though they're super-deadly predators of the oceans
0:02:44 > 0:02:46they're actually quite easy to catch,
0:02:46 > 0:02:49as I discovered when I joined up with Dr Sam Gruber
0:02:49 > 0:02:53and his Shark Lab team in Bimini in the Bahamas.
0:02:55 > 0:02:58Until recently, most of the life cycle of the shark
0:02:58 > 0:02:59was a total mystery to us.
0:02:59 > 0:03:02The folks at Shark Lab have done more than just about anyone else on
0:03:02 > 0:03:06the planet to help our understanding and knowledge of these creatures.
0:03:06 > 0:03:08The best way to find out about sharks is to catch them
0:03:08 > 0:03:11and that's what we're going to try to do.
0:03:13 > 0:03:16They're trying to tag and take DNA samples of large,
0:03:16 > 0:03:19potentially dangerous, tiger sharks.
0:03:19 > 0:03:22So unless someone volunteers to swim up to one deep underwater
0:03:22 > 0:03:26and poke it with a stick, the only way to get this information
0:03:26 > 0:03:28is to fish for them.
0:03:28 > 0:03:32By bating hooks at the right depths, they set a simple trap.
0:03:32 > 0:03:37The tiger sharks are so good at sniffing out their food
0:03:37 > 0:03:40that a single line may bring in several sharks.
0:03:40 > 0:03:43Of course, none of these are going to be harmed.
0:03:43 > 0:03:45We got something, got something.
0:03:45 > 0:03:46A little tiger.
0:03:46 > 0:03:48Woah! Woo!
0:03:48 > 0:03:50Pull it up, pull it up.
0:03:50 > 0:03:52- You got this?- We got something!
0:03:52 > 0:03:53A small tiger.
0:03:53 > 0:03:55We've got a small tiger shark.
0:03:57 > 0:04:00Couldn't even feel it pulling until the very last minute.
0:04:01 > 0:04:03Just on the end of the line here.
0:04:06 > 0:04:08He's not very big.
0:04:08 > 0:04:11Probably 2.5 metres.
0:04:13 > 0:04:17OK, so the first thing we need to do is to bring the tiger alongside
0:04:17 > 0:04:22and then the doc, here, has certain tests that he needs to do on it.
0:04:22 > 0:04:25Take some blood, get the length and the approximate weight of it.
0:04:25 > 0:04:27Wow.
0:04:27 > 0:04:30'Tagging a shark is like giving it a collar with its own name.
0:04:30 > 0:04:33'If it's caught again anywhere in the world and reported,
0:04:33 > 0:04:35'the team will know where it's been.
0:04:35 > 0:04:38'It sounds obvious, but it's exactly the kind of knowledge
0:04:38 > 0:04:43'that marine biologists are crying out for. And knowledge is power.
0:04:43 > 0:04:46'I'll come onto that again later.'
0:04:46 > 0:04:50This looks stressful for the shark, but they are such tough creatures.
0:04:52 > 0:04:53- OK.- Yeah.
0:04:54 > 0:04:56If you can hold the dorsal fin so we can just...
0:04:56 > 0:04:59- That's it.- OK, 172.
0:04:59 > 0:05:02It's really important that we minimise the amount of time
0:05:02 > 0:05:04that we have this shark kept like this.
0:05:04 > 0:05:06So now all we need to do is to tag it
0:05:06 > 0:05:10so we can identify the individual and then let it go.
0:05:11 > 0:05:12OK. There you go.
0:05:12 > 0:05:13Read it out.
0:05:13 > 0:05:18That's the tag in there and the tag number is 323871.
0:05:18 > 0:05:21Now we need to let this wonderful creature go.
0:05:21 > 0:05:24But in order to get it to get moving again
0:05:24 > 0:05:26I'm gonna need to get in the water with it
0:05:26 > 0:05:28and help it start swimming.
0:05:40 > 0:05:42Always stay behind, always stay behind.
0:05:42 > 0:05:45And just grab his dorsal fin.
0:05:45 > 0:05:48Don't irritate him just go very easily.
0:05:48 > 0:05:50OK, you're free. You're free.
0:06:17 > 0:06:19All the sharks the team catch
0:06:19 > 0:06:22are returned none the worse for the experience.
0:06:22 > 0:06:24More about this later on.
0:06:24 > 0:06:28But now, from tiger sharks to tigers.
0:06:34 > 0:06:37There's something about deadly animals, the real top predators,
0:06:37 > 0:06:40that make people sit up and take notice.
0:06:40 > 0:06:41Tigers, tigers.
0:06:43 > 0:06:45Sadly, this isn't always for the right reasons.
0:06:47 > 0:06:51When I travelled to India I had the opportunity to see, arguably,
0:06:51 > 0:06:53the most formidable land predator alive today.
0:06:54 > 0:06:56Oh, yes. I see it.
0:06:58 > 0:06:59Oh, wow.
0:07:04 > 0:07:06It's just so beautiful.
0:07:09 > 0:07:11It's getting up now.
0:07:11 > 0:07:13Moving further away into the forest.
0:07:15 > 0:07:18You'd think that bright orange, black and white would be
0:07:18 > 0:07:20a lousy colour scheme and show up anywhere,
0:07:20 > 0:07:24but in amongst the brown leaves with the dappled light
0:07:24 > 0:07:26I can barely see her.
0:07:27 > 0:07:29Absolutely amazing.
0:07:32 > 0:07:34It's about to come out and cross the road.
0:07:38 > 0:07:40Look at that.
0:07:43 > 0:07:46Just sauntering across the road in front of us.
0:07:51 > 0:07:52She's gone.
0:07:52 > 0:07:54Just like that.
0:07:54 > 0:07:58That an animal that size can just disappear into the undergrowth
0:07:58 > 0:08:02in the blink of an eye... Well...
0:08:02 > 0:08:06We got one! Fantastic. Yes!
0:08:07 > 0:08:10Not everyone who comes to see tigers gets lucky,
0:08:10 > 0:08:15but we had three encounters which is something I'll never forget.
0:08:15 > 0:08:20This would have to be the best wildlife encounter in India.
0:08:20 > 0:08:22Just right there in front of us.
0:08:24 > 0:08:27Seeing tigers was a life-changing experience for me.
0:08:27 > 0:08:29It made it all the more unbelievable
0:08:29 > 0:08:31that despite all the protection they get
0:08:31 > 0:08:34people still want to kill these animals.
0:08:34 > 0:08:37It's not for sport. It's for bits of their bodies.
0:08:37 > 0:08:40Yes, you did hear that correctly.
0:08:40 > 0:08:43There are people that think that eating or drinking things
0:08:43 > 0:08:46that include bits of tiger, perhaps ground-up bones,
0:08:46 > 0:08:50will in some way gain some of the powers of this deadly predator.
0:08:52 > 0:08:55This is all despite the fact that science has shown
0:08:55 > 0:08:58that none of these supposed medicines actually work.
0:09:01 > 0:09:04This is a big part of the reason that there are now only
0:09:04 > 0:09:07around 4,000 or 5,000 tigers alive in the wild.
0:09:08 > 0:09:10There used to be over 100,000.
0:09:12 > 0:09:15Just like the sharks, by being a powerful deadly predator
0:09:15 > 0:09:18people seem to want a piece of you...literally.
0:09:26 > 0:09:29In India, I'd heard of another formidable contender
0:09:29 > 0:09:30for the Deadly 60.
0:09:30 > 0:09:33It's called a sloth bear.
0:09:33 > 0:09:35'The statistics claim that sloth bears
0:09:35 > 0:09:37'are more dangerous to us than tigers.'
0:09:37 > 0:09:39Hello! Hello.
0:09:39 > 0:09:42'It's hard to believe. And when I asked some locals
0:09:42 > 0:09:44'they certainly seemed surprised.'
0:09:44 > 0:09:47- Tiger and a bear.- Yeah.
0:09:47 > 0:09:50Which animal do you think is the most scary?
0:09:50 > 0:09:52This one is more.
0:09:52 > 0:09:53It's very dangerous.
0:09:53 > 0:09:54- This one.- Ah-ha.
0:09:54 > 0:09:56- Tiger.- Tiger?
0:09:56 > 0:09:58- Tiger.- Tiger.- Tiger.- Tiger.- Grr!
0:09:58 > 0:10:01Which one do you think is more dangerous?
0:10:02 > 0:10:04- This one.- This one?
0:10:04 > 0:10:06That's very good. Everyone says the tiger.
0:10:06 > 0:10:09'Perhaps she knows something I don't.
0:10:09 > 0:10:12'To find out more about these rare animals
0:10:12 > 0:10:14'I travelled to a bear sanctuary.'
0:10:14 > 0:10:17Being deadly wasn't the only surprise about them
0:10:17 > 0:10:19that I was going to discover.
0:10:19 > 0:10:21Up close, they were certainly pretty impressive.
0:10:21 > 0:10:24Actually, let's be honest...
0:10:24 > 0:10:28I was a bit, well, scared.
0:10:28 > 0:10:30Oh, my life!
0:10:30 > 0:10:32It's just gone absolutely mad!
0:10:35 > 0:10:39All of a sudden they've just gone form gentle feeding teddy bears
0:10:39 > 0:10:41to just a whirling mess of teeth and...
0:10:41 > 0:10:44I'm glad I'm not in there.
0:10:47 > 0:10:50A fight between sloth bears is a very frightening sight.
0:10:53 > 0:10:56You wouldn't want to be around one when it got angry.
0:10:56 > 0:10:59I discovered that they were clearly a candidate for the Deadly 60,
0:10:59 > 0:11:04but I also discovered a dark secret about Indian sloth bears.
0:11:06 > 0:11:08Many are enslaved as youngsters
0:11:08 > 0:11:11and trained to dance for the amusement of passers-by,
0:11:11 > 0:11:14which earns money for their captors.
0:11:17 > 0:11:19The dancing of the bears has been done
0:11:19 > 0:11:22for hundreds of years by a gipsy tribe,
0:11:22 > 0:11:24originally to entertain emperors and kings,
0:11:24 > 0:11:28but then later on as street entertainment for tourists.
0:11:29 > 0:11:33It's actually illegal, but still goes on all over India.
0:11:38 > 0:11:39All right, Steve, you're in.
0:11:39 > 0:11:42- Thank you. - Let's feed you to the bears!- OK.
0:11:42 > 0:11:44How many do you have in here?
0:11:44 > 0:11:47This enclosure has about 26 bears.
0:11:47 > 0:11:51And, um, as you know, every single one of these bears
0:11:51 > 0:11:55has been rescued from a really barbaric practice
0:11:55 > 0:11:58- called bear-dancing.- Yeah.
0:11:58 > 0:12:01And each of these bears have actually been poached, stolen,
0:12:01 > 0:12:06their mother has been killed and the cub is removed when it's really tiny.
0:12:06 > 0:12:11And then this little bear cub is sold for maybe five or six pounds.
0:12:11 > 0:12:14Basically they use the principles of pain and fear
0:12:14 > 0:12:16to make the animal perform.
0:12:16 > 0:12:19And then the animal lives this life at the end of a rope.
0:12:20 > 0:12:24To see such an impressive animal being protected in captivity
0:12:24 > 0:12:27when they should be running around in the wild
0:12:27 > 0:12:28was not what I had in mind.
0:12:28 > 0:12:33'But there's hope. These rescued bears gave me and many others
0:12:33 > 0:12:38'the opportunity to see them up close and learn more about them
0:12:38 > 0:12:42'as animals, not as entertainment.'
0:12:49 > 0:12:53Three deadly animals - sharks...
0:12:53 > 0:12:56tigers...and sloth bears.
0:12:56 > 0:13:01And all of them in trouble directly because of one other species -
0:13:01 > 0:13:04humans.
0:13:05 > 0:13:09Are humans really so dangerous to every other animal?
0:13:09 > 0:13:13Would they have got on my Deadly 60?
0:13:13 > 0:13:16A person can't compete physically with something like a tiger
0:13:16 > 0:13:20but we have one weapon that beats just about anything...
0:13:24 > 0:13:27..a huge, developed brain.
0:13:27 > 0:13:31A single person with a few simple tools can hunt and kill
0:13:31 > 0:13:34just about any creature on the planet.
0:13:34 > 0:13:37When we cooperate and use technology,
0:13:37 > 0:13:41the results are potentially devastating.
0:13:43 > 0:13:46So the problem is that we are just too good.
0:13:46 > 0:13:49Humans are the most deadly animals that have ever lived.
0:13:49 > 0:13:52We would definitely get on the Deadly 60.
0:13:55 > 0:13:59But with that awesome power comes great responsibility.
0:13:59 > 0:14:02It's one thing to kill a few animals to feed ourselves,
0:14:02 > 0:14:05but by far the most damage we cause
0:14:05 > 0:14:09is destroying the homes where animals live.
0:14:09 > 0:14:12As more and more people live on the planet,
0:14:12 > 0:14:16it leaves less space for animals and less wild places.
0:14:18 > 0:14:20Take the ocean.
0:14:20 > 0:14:24It's vast and it's tempting to think that sharks could live everywhere.
0:14:24 > 0:14:29But, actually, they have their own favourite places that they hang out.
0:14:30 > 0:14:33We only know this because of research by biologists
0:14:33 > 0:14:37like the guys at Shark Lab in the Bahamas.
0:14:39 > 0:14:43They've discovered that lemon sharks like to give birth in the water
0:14:43 > 0:14:45around mangroves.
0:14:52 > 0:14:56Mangroves are shallow areas where trees grow in the saltwater.
0:14:56 > 0:15:00The roots provide a shelter, creating a nursery for sharks
0:15:00 > 0:15:04as well as many other baby marine animals.
0:15:04 > 0:15:07It's a bit like a soft-play area for fish.
0:15:08 > 0:15:12Unfortunately, these areas are often exactly where
0:15:12 > 0:15:14people want to build hotel resorts.
0:15:16 > 0:15:19In somewhere like the Bahamas,
0:15:19 > 0:15:23a single resort could demolish a huge area of mangrove,
0:15:23 > 0:15:26affecting many hundreds of sharks.
0:15:32 > 0:15:36'Dr Gruber showed me some of the babies that spend a short while
0:15:36 > 0:15:39'at Shark Lab before being released.
0:15:40 > 0:15:43'Over the years many baby sharks have been tagged and released
0:15:43 > 0:15:47'so they know exactly where they go and how long they'll spend there.
0:15:47 > 0:15:50'When I visited, it was the turn of one baby shark
0:15:50 > 0:15:52'to go back to the wild.'
0:15:52 > 0:15:56All the measurements have been done that we need to take,
0:15:56 > 0:15:59so we're going to release this young lemon shark
0:15:59 > 0:16:03back into the place that, at this stage in its life cycle,
0:16:03 > 0:16:06it will be most comfortable - here amongst the mangroves.
0:16:06 > 0:16:09All these roots offer plenty of places for them to hide
0:16:09 > 0:16:12so he should be right at home here.
0:16:12 > 0:16:15OK, little fella, off you go!
0:16:16 > 0:16:19Whoa!
0:16:21 > 0:16:24He actually jumped right on Simon the cameraman!
0:16:34 > 0:16:38We've met a few animals on Deadly 60 that take their deadly abilities
0:16:38 > 0:16:40to the extremes.
0:16:41 > 0:16:43Oh, look at that!
0:16:51 > 0:16:55They've become specialists.
0:16:55 > 0:16:57They've evolved to be so good at what they do
0:16:57 > 0:17:01that they pretty much can't do anything else.
0:17:01 > 0:17:05But being such a specialist can have its drawbacks.
0:17:05 > 0:17:10Take the weird and wonderful gharials we met in India.
0:17:11 > 0:17:15There's probably only about 200 adult gharial left in the world.
0:17:21 > 0:17:24So the seven or eight that I'm looking at down here
0:17:24 > 0:17:28on the edge of this lake are a significant portion of what's left
0:17:28 > 0:17:31to the world of this amazing animal.
0:17:35 > 0:17:38It's very difficult from this far away to get a real sense
0:17:38 > 0:17:41of what's so special about this animal. But I do know a place
0:17:41 > 0:17:44where we can get closer.
0:17:47 > 0:17:49Croc Bank in Chennai is a reptile park
0:17:49 > 0:17:52where they have some adult gharial in captivity.
0:17:52 > 0:17:55It was a great opportunity to see
0:17:55 > 0:17:58'what makes them such specialist predators.'
0:18:00 > 0:18:02Now, this is more like it!
0:18:08 > 0:18:12That...is a big male gharial.
0:18:12 > 0:18:16Probably not completely fully grown. They get as big as 6 metres.
0:18:16 > 0:18:19But this one is going to be absolutely huge.
0:18:19 > 0:18:22Look at that faceful of teeth!
0:18:22 > 0:18:24That is amazing!
0:18:24 > 0:18:28Although they are massive, they're only interested in eating one thing,
0:18:28 > 0:18:31and luckily that's not me.
0:18:31 > 0:18:33Gharials are complete fish specialists,
0:18:33 > 0:18:35that's what they feed on.
0:18:35 > 0:18:39He won't try and take a bit of me because he doesn't want to eat me,
0:18:39 > 0:18:41I'm hoping! Fingers crossed!
0:18:42 > 0:18:46Let's see if we can get to see those amazing jaws at work.
0:18:48 > 0:18:49Wow!
0:18:49 > 0:18:51Did you see him catch that?
0:19:16 > 0:19:20I know it looks ridiculous, the way they throw back their heads
0:19:20 > 0:19:23and chug the fish back in one go, but it's down to the fact
0:19:23 > 0:19:27that crocodiles can only open their mouths open and shut,
0:19:27 > 0:19:30they can't go side to side, their jaw won't allow it.
0:19:30 > 0:19:34So they throw their head back and just let gravity drop the fish
0:19:34 > 0:19:37into their gullet. Looks crazy but it's worked for 100 million years
0:19:37 > 0:19:40so it must be pretty good.
0:19:42 > 0:19:45To us, the gharial's totally harmless
0:19:45 > 0:19:49but an utterly unique marvel of nature.
0:19:49 > 0:19:53To a fish, though, it's an absolute swimming nightmare.
0:19:53 > 0:19:56And that's the gharial's problem.
0:19:56 > 0:20:01They're such perfect fish-hunters, if anything happens to those fish,
0:20:01 > 0:20:03then it affects the gharial.
0:20:03 > 0:20:06And in India, that's exactly what's happened.
0:20:06 > 0:20:09As more and more people need these fish,
0:20:09 > 0:20:12the gharial has been squeezed out.
0:20:12 > 0:20:15The gharial's cousin, the mugger crocodile,
0:20:15 > 0:20:19is no specialist. It's under the same pressure from people
0:20:19 > 0:20:21as the gharial but it's less fussy
0:20:21 > 0:20:23about where it lives and what it eats.
0:20:23 > 0:20:29Its broader snout allows it to catch reptiles, birds, rats, monkeys,
0:20:29 > 0:20:33even the odd stray dog. By keeping its options open,
0:20:33 > 0:20:36it has a much better chance of survival.
0:20:38 > 0:20:41So what does the future hold for the gharial?
0:20:41 > 0:20:45Croc Bank had a captive breeding programme that's been successful.
0:20:45 > 0:20:50This gave me a wonderful opportunity to see some babies up close.
0:20:50 > 0:20:52Ooh, there's one!
0:20:53 > 0:20:55Ah-ha!
0:20:59 > 0:21:02- IT SQUEAKS - You beauty!
0:21:02 > 0:21:06That is the cutest sound in the world.
0:21:07 > 0:21:10IT CONTINUES TO SQUEAK
0:21:13 > 0:21:15Look at that!
0:21:16 > 0:21:20I have to say, it's not often that I get an animal in my hand
0:21:20 > 0:21:24and I'm just speechless, but that's got to be
0:21:24 > 0:21:28one of the weirdest, one of the most beautiful,
0:21:28 > 0:21:32one of the most touching, I guess, animals I've ever been close to.
0:21:35 > 0:21:39It's terrifying to think that an animal that's been around
0:21:39 > 0:21:43since before the dinosaurs can be coming to the brink of extinction
0:21:43 > 0:21:46because of us.
0:21:46 > 0:21:49There are fewer gharials left in the wild
0:21:49 > 0:21:51than there are giant pandas.
0:21:51 > 0:21:54But seeing this baby does give me hope.
0:22:00 > 0:22:02Look at that!
0:22:02 > 0:22:07So, with so many stars of the Deadly 60 in such deep trouble,
0:22:07 > 0:22:09'am I worried for their future?
0:22:09 > 0:22:12'Well, the short answer is yes.
0:22:12 > 0:22:15'But it's not all bad news.
0:22:15 > 0:22:19'Filming Deadly 60 brought the team and I in contact with many people'
0:22:19 > 0:22:22who've dedicated their lives to studying deadly animals,
0:22:22 > 0:22:25like the Shark Lab guys in the Bahamas.
0:22:25 > 0:22:29It may seem that finding out small details about how long a shark is
0:22:29 > 0:22:31or what it's had for breakfast isn't important,
0:22:31 > 0:22:34but that couldn't be further from the truth.
0:22:34 > 0:22:36Any detail, no matter how small,
0:22:36 > 0:22:39can help our understanding of animals, and that knowledge
0:22:39 > 0:22:43gives us power to make people in charge do something.
0:22:44 > 0:22:47'And it wasn't just with sharks.
0:22:47 > 0:22:51'I met amazing people all over the world who spend their whole lives
0:22:51 > 0:22:54'studying, educating, filming the kind of creatures
0:22:54 > 0:22:56'that most people avoid.
0:22:56 > 0:23:00'But why should we care about deadly animals?
0:23:00 > 0:23:03'Well, the natural world is all about balance.
0:23:03 > 0:23:07'Deadly predators munch their way through a fair amount of pests
0:23:07 > 0:23:11'and keep their numbers down. For example, a world without snakes'
0:23:11 > 0:23:13would be a much easier place for rats to live.
0:23:13 > 0:23:17And a single bat can eat a thousand bugs a night,
0:23:17 > 0:23:21so lose the bats and you'd have a lot more insects like mosquitoes
0:23:21 > 0:23:24buzzing around the place.
0:23:26 > 0:23:29But there is another reason to care.
0:23:29 > 0:23:32'Just being close to a truly deadly animal
0:23:32 > 0:23:34'can be a life-changing experience.
0:23:34 > 0:23:38'In the Bahamas, filming lemon sharks, myself and cameraman Simon
0:23:38 > 0:23:41'entered the water for our last dive of the day.
0:23:41 > 0:23:43'I had no idea I was about to see
0:23:43 > 0:23:46'one of the rarest sharks in the world.'
0:23:53 > 0:23:55There! Simon! Simon! Simon!
0:23:55 > 0:23:59This is one of the most well-feared creatures in the sea!
0:23:59 > 0:24:02I don't believe it. It's a great hammerhead.
0:24:03 > 0:24:06This is absolutely incredible.
0:24:06 > 0:24:08It's coming right up to us,
0:24:08 > 0:24:11right up in front of the cameraman.
0:24:12 > 0:24:16And it's now heading for me!
0:24:18 > 0:24:20That hammerhead-shaped head
0:24:20 > 0:24:24spreads out the electrical receptors
0:24:24 > 0:24:27so that the hammerhead can sense
0:24:27 > 0:24:31its prey from all different angles.
0:24:34 > 0:24:38And this would have to be probably the second largest
0:24:38 > 0:24:42toothed shark in the oceans.
0:24:46 > 0:24:49I don't believe it! I do not believe it!
0:24:49 > 0:24:51That is out of this world!
0:24:51 > 0:24:53Simon, high five!
0:24:53 > 0:24:56High five!
0:25:00 > 0:25:03You can instantly see how different it is.
0:25:03 > 0:25:05The dorsal fin is huge.
0:25:06 > 0:25:11That's the first time I've seen one of those extraordinary sharks.
0:25:17 > 0:25:19A tiger shark, as well.
0:25:20 > 0:25:23All of a sudden everything's changed.
0:25:23 > 0:25:27Two of the top four most dangerous fish in the seas
0:25:27 > 0:25:29all around me.
0:25:29 > 0:25:32There he is again! There he is!
0:25:39 > 0:25:42All of a sudden, though, it's a little bit dark.
0:25:42 > 0:25:45The water's not as clear as it was earlier on.
0:25:45 > 0:25:50And I have to admit it's a bit frightening to be down here now.
0:25:52 > 0:25:56That was an extraordinary experience but I can't see anything now
0:25:56 > 0:25:58and I must go up.
0:26:12 > 0:26:15I don't really believe what I've just seen.
0:26:15 > 0:26:17We were just sat down there
0:26:17 > 0:26:20watching the lemon sharks
0:26:20 > 0:26:22when all of a sudden I turned around
0:26:22 > 0:26:25and just coming out of the deep blue in the distance
0:26:25 > 0:26:27was a great hammerhead shark.
0:26:27 > 0:26:30It just doesn't get any better than that.
0:26:30 > 0:26:33But unfortunately we haven't got any more light down there
0:26:33 > 0:26:37so we had to come up. But I could have stayed down there all night!
0:26:37 > 0:26:40I don't believe it! Come on!
0:26:44 > 0:26:46This is out of this world!
0:26:48 > 0:26:51'Deadly animals can be fast, powerful,
0:26:51 > 0:26:53'beautiful...'
0:26:53 > 0:26:55Ow!
0:26:55 > 0:26:58'..inspiring and even life-changing.
0:26:58 > 0:27:00'And when they do their thing,
0:27:00 > 0:27:03'it takes your breath away.'
0:27:14 > 0:27:16It's definitely going... It's definitely going...
0:27:16 > 0:27:20It has to make it on to the... Deadly 60...on the Deadly 60.
0:27:20 > 0:27:23This is still the most feared animal in the world
0:27:23 > 0:27:26but that's not why she's going on my Deadly 60.
0:27:26 > 0:27:29She's going on my list because she's magnificent.
0:27:41 > 0:27:44Subtitles by Red Bee Media Ltd.
0:27:44 > 0:27:47E-mail subtitling@bbc.co.uk