0:00:02 > 0:00:03So far on Life Story,
0:00:03 > 0:00:06we have seen animals take their first steps...
0:00:14 > 0:00:16..grow up...
0:00:21 > 0:00:22..find a home...
0:00:28 > 0:00:31..and gain power.
0:00:31 > 0:00:33Now, they need a mate.
0:00:35 > 0:00:37Competition to win a partner
0:00:37 > 0:00:39is so intense in nature,
0:00:39 > 0:00:44it has created both the most extraordinary beauty...
0:00:44 > 0:00:47and life-threatening violence.
0:01:23 > 0:01:25A male waved albatross
0:01:25 > 0:01:29will have the same partner for his lifetime of over 20 years.
0:01:34 > 0:01:37After feeding alone over the Pacific Ocean,
0:01:37 > 0:01:40this male has returned here to the Galapagos,
0:01:40 > 0:01:42as he does every year,
0:01:42 > 0:01:44to wait for his mate to come back to him.
0:01:51 > 0:01:55Others are already reaffirming their bonds.
0:02:07 > 0:02:10As the years go by and they get older,
0:02:10 > 0:02:14there is always the possibility that one of them will not make it back.
0:02:18 > 0:02:21But his bond with his partner is so strong,
0:02:21 > 0:02:24he will simply sit and wait for her.
0:02:29 > 0:02:34In nature, it's rare to form such a lifelong commitment.
0:02:34 > 0:02:40For most animals, the mating game is both brief and fiercely competitive.
0:02:45 > 0:02:47A female green turtle
0:02:47 > 0:02:51must survive the dangers of the open ocean for 30 years
0:02:51 > 0:02:53before she's mature enough to mate.
0:02:55 > 0:03:00She's come here, to the shallow waters off Malaysia, to breed.
0:03:15 > 0:03:17A male.
0:03:17 > 0:03:20He's been waiting weeks for this opportunity.
0:03:31 > 0:03:35Courtship begins with the gentlest of circling...
0:03:43 > 0:03:46..before she accepts his advances.
0:03:57 > 0:03:59Their first breath together
0:03:59 > 0:04:02is the beginning of several hours of mating.
0:04:05 > 0:04:08He will hold on as tight as he can
0:04:08 > 0:04:10to keep her all to himself.
0:04:16 > 0:04:19Unfortunately, they have company.
0:04:19 > 0:04:22Another male.
0:04:22 > 0:04:24He will do anything he can to separate the pair
0:04:24 > 0:04:27and mate with the female himself.
0:04:31 > 0:04:34He targets the soft, vulnerable parts.
0:04:53 > 0:04:55He knocks the air out of his rival.
0:05:05 > 0:05:09The female is struggling now with the extra weight on her back,
0:05:09 > 0:05:12and soon she will need to surface to take a breath.
0:05:18 > 0:05:20Another male.
0:05:33 > 0:05:35MORE competition.
0:05:38 > 0:05:40And here's another.
0:05:54 > 0:05:58Now, the female has two males locked on her back
0:05:58 > 0:06:01and it's twice as hard for her to get to the surface.
0:06:16 > 0:06:19After an hour of battling,
0:06:19 > 0:06:22the pair are being harassed by seven males.
0:06:29 > 0:06:33But the males are so excited, they start attacking each other.
0:06:40 > 0:06:43In the commotion, the couple break away for the surface.
0:06:58 > 0:07:00The pair manage to make their escape...
0:07:02 > 0:07:07..leaving the rival males milling around in confusion.
0:07:14 > 0:07:19Finally, they can mate in peace.
0:07:25 > 0:07:31In the mating game, it's usually the males who take the risks
0:07:31 > 0:07:32and make the most effort.
0:07:34 > 0:07:36HE CHIRRUPS
0:07:36 > 0:07:41A flame bowerbird doesn't fight to win a mate.
0:07:41 > 0:07:44His strategy is to put on a show.
0:07:48 > 0:07:51First, he builds a stage.
0:07:57 > 0:08:01In the breeding season, he spends a week creating this construction,
0:08:01 > 0:08:05called a bower, in the forests of Papua New Guinea.
0:08:09 > 0:08:12He's a stickler for detail.
0:08:22 > 0:08:24The stage is set.
0:08:25 > 0:08:29Time to paint it with mud.
0:08:29 > 0:08:32That makes a darker background,
0:08:32 > 0:08:35which will set off his magnificent colours.
0:08:41 > 0:08:45Next, there are difficult decisions about the set-dressing.
0:08:56 > 0:08:58Perhaps a bit dull.
0:09:01 > 0:09:03There's still room for improvement.
0:09:15 > 0:09:18Perfect.
0:09:18 > 0:09:21Time to call in the audience...
0:09:22 > 0:09:24HE SQUAWKS
0:09:26 > 0:09:28..if anyone's interested.
0:09:32 > 0:09:34This could take some time.
0:09:39 > 0:09:44Attracting attention is an essential part of winning a mate.
0:09:48 > 0:09:52The world's oceans are filled with brilliant colours,
0:09:52 > 0:09:55all designed to make their wearers conspicuous.
0:10:00 > 0:10:04Unfortunately, this small, Japanese puffer fish is dull,
0:10:04 > 0:10:07almost to the point of invisibility,
0:10:07 > 0:10:08but, to compensate,
0:10:08 > 0:10:11he is probably nature's greatest artist.
0:10:13 > 0:10:15To grab a female's attention,
0:10:15 > 0:10:18he creates something that almost defies belief.
0:10:31 > 0:10:34His only tools are his fins.
0:10:42 > 0:10:46In his head, a plan of mathematical perfection.
0:10:56 > 0:11:01He ploughs the sand, breaking it up into the finest of particles.
0:11:12 > 0:11:17These shells aren't just rubbish to be removed -
0:11:17 > 0:11:21he uses them to decorate the ridges of his construction.
0:11:31 > 0:11:34He can't rest for more than a moment,
0:11:34 > 0:11:37but must work 24 hours a day for a week,
0:11:37 > 0:11:40or the current will destroy his creation.
0:11:59 > 0:12:03A final tidy-up and his masterpiece is complete.
0:12:47 > 0:12:51Nowhere else in nature does an animal construct something
0:12:51 > 0:12:53as complex and perfect as this.
0:13:04 > 0:13:08If this doesn't get him noticed, nothing will.
0:13:18 > 0:13:20Now, it's ready for inspection.
0:13:23 > 0:13:27A female, swollen with eggs.
0:13:31 > 0:13:35To make sure she gets the best view, he encourages her into the centre.
0:13:53 > 0:13:54Inspection over,
0:13:54 > 0:13:58she withdraws to await the final stage of the process.
0:14:10 > 0:14:15By the next morning, all the softest sand is now in the middle.
0:14:21 > 0:14:24The centre of the arena has been flattened.
0:14:39 > 0:14:42Right on cue, here she is.
0:14:42 > 0:14:44This is what she wanted.
0:14:44 > 0:14:46It's a perfect bed for her eggs.
0:14:50 > 0:14:55The male now grasps her cheek and then fertilises her minuscule eggs.
0:15:01 > 0:15:05And with a quick flick of his fins, he buries them.
0:15:13 > 0:15:18They carry on like this until she has finished laying.
0:15:48 > 0:15:53An hour of his rough affection leaves a love bite on her cheek.
0:16:14 > 0:16:16Finally, she leaves.
0:16:32 > 0:16:36He stays to fan the eggs until they hatch,
0:16:36 > 0:16:40while his extraordinary work of art fades away around him.
0:16:56 > 0:16:59South Georgia in the Antarctic.
0:17:25 > 0:17:26A male fur seal.
0:17:28 > 0:17:32He's about ten years old and in his prime.
0:17:35 > 0:17:39He's coming ashore to face the fight of his life.
0:17:42 > 0:17:45He may even die on this beach.
0:17:51 > 0:17:55For the first time, he is strong enough to try to win
0:17:55 > 0:17:58a territory that could attract a harem of females.
0:18:01 > 0:18:04But there are plenty of rivals here with the same idea.
0:18:42 > 0:18:45These are only the preliminary rounds.
0:18:45 > 0:18:49The real struggle will begin once the females arrive.
0:18:59 > 0:19:03Just a week later, females have filled the beach,
0:19:03 > 0:19:08choosing the best territories in which to give birth to their pups.
0:19:16 > 0:19:20This male now has a harem of a dozen females
0:19:20 > 0:19:23and he's going to have to defend them.
0:19:34 > 0:19:39His jealous neighbours will be ready to exploit any sign of weakness.
0:19:45 > 0:19:48It's only once the females have given birth
0:19:48 > 0:19:50that males can mate with them.
0:19:53 > 0:19:58Now this male must ensure that he alone fathers next year's offspring.
0:20:07 > 0:20:10But this is the rival's chance, too.
0:20:23 > 0:20:25He must act fast.
0:20:37 > 0:20:41He won't find them all as easy as this to intimidate.
0:21:10 > 0:21:12New males pound up from the sea,
0:21:12 > 0:21:14intent on testing the territory holders.
0:21:21 > 0:21:24With many more waiting behind them.
0:21:30 > 0:21:33The biggest battles are yet to come.
0:21:48 > 0:21:52Usually in the mating game, it's not the males
0:21:52 > 0:21:54but the females who call the shots.
0:21:56 > 0:22:00And this male long-tailed manakin is trying to win over
0:22:00 > 0:22:02one of the world's choosiest females.
0:22:05 > 0:22:09He's been practising his moves here in Costa Rica
0:22:09 > 0:22:11for as long as a decade.
0:22:21 > 0:22:23There's another male here, too.
0:22:26 > 0:22:30Only the newcomer is not a rival,
0:22:30 > 0:22:32he is a junior partner.
0:22:36 > 0:22:41They know each other so well, they can finish each other's calls.
0:22:46 > 0:22:51But that's not all that they have synchronised.
0:23:06 > 0:23:09They are master and apprentice.
0:23:15 > 0:23:19The apprentice has also been practising for many years.
0:23:19 > 0:23:23But now he must copy the master's every move.
0:23:29 > 0:23:32In fact, the master needs his wingman
0:23:32 > 0:23:35as a female won't even look at a solo performer,
0:23:35 > 0:23:38and, what's more, she will expect perfect harmony,
0:23:38 > 0:23:42so they practice together every day.
0:24:20 > 0:24:22At last, they're ready.
0:24:29 > 0:24:30Here she is.
0:24:32 > 0:24:34Rehearsal over,
0:24:34 > 0:24:38their performance is the result of more than ten years' hard work.
0:24:46 > 0:24:49She won't tolerate a single slip-up.
0:25:25 > 0:25:28Suddenly, the master calls time on the dance...
0:25:30 > 0:25:33..and the apprentice is banished.
0:25:36 > 0:25:40Only the master gets to mate.
0:25:40 > 0:25:43For the apprentice, there will be no reward until his master dies
0:25:43 > 0:25:45and he can take his place.
0:25:50 > 0:25:54The mating game can sometimes be a long game.
0:26:07 > 0:26:12A male peacock jumping spider from Australia,
0:26:12 > 0:26:15on a quest for a mate.
0:26:25 > 0:26:27And when you're the size of a grain of rice,
0:26:27 > 0:26:31almost anything here could be dangerous.
0:26:38 > 0:26:43He's searching for any sign that a female spider came this way.
0:26:47 > 0:26:49And he's found something.
0:26:51 > 0:26:54Spider silk, with the scent of a female.
0:26:58 > 0:27:01He just needs to follow it...
0:27:06 > 0:27:08..wherever it leads him.
0:27:35 > 0:27:40Other males have gone on the same quest and have come to a grisly end.
0:28:10 > 0:28:15Here's the female and she doesn't look very amorous.
0:28:21 > 0:28:23In fact, she kills every male
0:28:23 > 0:28:27who doesn't match up to her expectations.
0:28:31 > 0:28:34What can he do to win her over?
0:28:39 > 0:28:41Dance.
0:28:52 > 0:28:55Dance for his life.
0:28:55 > 0:28:59He will need a show-stopping trick to avoid becoming lunch.
0:29:19 > 0:29:22With his fan unfurled,
0:29:22 > 0:29:26he begins an ever more complicated series of dance moves
0:29:26 > 0:29:28to try and seduce her.
0:30:14 > 0:30:17At last, she succumbs to his advances
0:30:17 > 0:30:19and allows him to mate with her.
0:30:33 > 0:30:35He matched her expectations.
0:30:43 > 0:30:46But she kills him anyway.
0:30:48 > 0:30:50After all, his body will make the perfect meal
0:30:50 > 0:30:52with which to nourish their eggs.
0:30:57 > 0:30:59Back in Papua New Guinea,
0:30:59 > 0:31:04the male flame bowerbird is still doing his best to attract a female.
0:31:06 > 0:31:09And at last he gets a response.
0:31:11 > 0:31:15Unfortunately, it's a young male.
0:31:22 > 0:31:25And, worse, he's brought a friend.
0:31:31 > 0:31:34They're taking liberties, practising on his bower.
0:31:36 > 0:31:39He doesn't seem to know what to do about it.
0:31:46 > 0:31:48But enough is enough.
0:31:56 > 0:32:02The commotion attracts the attention of another adult male,
0:32:02 > 0:32:04a neighbour and rival.
0:32:29 > 0:32:34Having destroyed the bower, he even steals the decorations.
0:32:39 > 0:32:44The owner arrives back to find a scene of destruction.
0:32:49 > 0:32:52No female's going to look twice at this mess.
0:32:56 > 0:33:01He'll just have to start all over again.
0:33:01 > 0:33:05In life, there will always be rivals in the mating game.
0:33:16 > 0:33:20Autumn in the forests of Japan.
0:33:25 > 0:33:29The mating season for Japanese macaques.
0:33:35 > 0:33:40This dominant male is over 20 years old.
0:33:40 > 0:33:42Age has clouded one eye.
0:33:47 > 0:33:51He has had a harem of females for many years.
0:33:58 > 0:34:01And he can mate with them unopposed.
0:34:11 > 0:34:14But time catches up with everyone.
0:34:25 > 0:34:29Young rival males are hanging out on the perimeter,
0:34:29 > 0:34:31eyeing up his females.
0:34:45 > 0:34:51For years, Old Blue Eye has asserted his authority from this tree.
0:34:54 > 0:34:57But his authority is waning
0:34:57 > 0:35:00and, the moment his back is turned,
0:35:00 > 0:35:04his females are lured away by younger males.
0:35:17 > 0:35:22Throughout the forest, his females are conducting secret affairs.
0:35:28 > 0:35:33Blue Eye tries to guard his females by patrolling the edge of the troop.
0:35:47 > 0:35:50Caught in the act.
0:35:50 > 0:35:53He attacks his unfaithful female.
0:36:05 > 0:36:08He has reasserted his authority.
0:36:16 > 0:36:19Or so he thinks.
0:36:28 > 0:36:31The moment the old male shuts his eyes,
0:36:31 > 0:36:33his females are off again.
0:36:46 > 0:36:51Most of next year's babies will be fathered by his rivals.
0:36:58 > 0:37:01And he will never know.
0:37:12 > 0:37:14In Papua New Guinea,
0:37:14 > 0:37:18the bowerbird has lovingly rebuilt and redecorated his bower.
0:37:30 > 0:37:32Another visitor.
0:37:37 > 0:37:40This time, it's a female.
0:37:44 > 0:37:47This is just where he wants her.
0:37:47 > 0:37:49Time to begin the show.
0:37:52 > 0:37:56First, he expands his pupils alternately.
0:38:06 > 0:38:09It's an oddly mesmerising display.
0:38:18 > 0:38:20A spot of limbering up,
0:38:20 > 0:38:23accompanied by a weird and wheezy call
0:38:23 > 0:38:25from deep in his throat.
0:38:38 > 0:38:41Now, it's time for his grand performance.
0:38:48 > 0:38:52He waves his wing like a matador's cape.
0:39:07 > 0:39:09She appears to be transfixed.
0:39:22 > 0:39:27This is certainly eye-catching, but it seems he needs to do more.
0:39:33 > 0:39:36Generously, she drops him a hint.
0:39:51 > 0:39:54It's the bird equivalent of a bouquet of flowers.
0:40:10 > 0:40:11It's all going so well,
0:40:11 > 0:40:16it's time to get physical, with a few head-butts to her chest.
0:40:30 > 0:40:35One final flourish to cap weeks of effort.
0:40:38 > 0:40:40But something's wrong.
0:40:43 > 0:40:47His rival is back, and at the worst possible moment.
0:40:47 > 0:40:49What should he do?
0:41:00 > 0:41:04For the female, the moment has gone.
0:41:07 > 0:41:12Sometimes, whatever you do, things just don't work out.
0:41:19 > 0:41:22On the fur seal beach in South Georgia,
0:41:22 > 0:41:25the fighting has been relentless for two weeks.
0:41:52 > 0:41:56Bloodied and scarred, this bull has held on to his ground
0:41:56 > 0:41:59and his harem against allcomers.
0:42:08 > 0:42:10But it's not over yet.
0:42:10 > 0:42:14The rivals keep coming.
0:42:26 > 0:42:29This new one looks particularly powerful.
0:43:25 > 0:43:29When two bulls are as evenly matched as this,
0:43:29 > 0:43:33they can trade blows for 20 minutes.
0:43:44 > 0:43:46The resident bull is tiring.
0:43:50 > 0:43:53The weeks of fighting have taken too great a toll.
0:43:57 > 0:44:00Suddenly, his neighbours join in the attack.
0:44:11 > 0:44:15Overwhelmed, he's driven from his territory
0:44:15 > 0:44:17and out of the colony for ever.
0:44:30 > 0:44:35The breeding season is almost over and the seals will soon leave.
0:44:46 > 0:44:52Now an outcast, this mortally wounded bull will die here...
0:44:55 > 0:44:57..but he will die a winner.
0:44:59 > 0:45:03He held his territory for long enough to father offspring.
0:45:22 > 0:45:29Success in nature is all about creating the next generation,
0:45:29 > 0:45:31whatever it takes.
0:45:49 > 0:45:55A male waved albatross waits for his mate to return from the open sea.
0:46:10 > 0:46:12Could this be her?
0:46:19 > 0:46:21Or this?
0:46:47 > 0:46:50Is there something familiar about her?
0:47:47 > 0:47:49Recognition.
0:48:05 > 0:48:08Reunited.
0:48:17 > 0:48:21And they can resume their long-standing relationship.
0:48:47 > 0:48:50If love, as we understand it, exists in nature,
0:48:50 > 0:48:53then surely this must be it.
0:49:12 > 0:49:16Their lifelong bond will help them face the final chapter
0:49:16 > 0:49:20of life's story together -
0:49:20 > 0:49:22parenthood.
0:49:37 > 0:49:41One of the most unexpected stories found by the Life Story team
0:49:41 > 0:49:46was that of a small fish who makes crop circles in the sand.
0:49:48 > 0:49:51Unfortunately, it builds them right at the bottom of a bay
0:49:51 > 0:49:54in southern Japan.
0:49:54 > 0:49:59So how do you film a tiny fish, 13 metres under the sea?
0:50:04 > 0:50:09Specialist underwater cameraman Hugh Miller's solution
0:50:09 > 0:50:12is to build a film studio on the sea bed.
0:50:12 > 0:50:14This is a quad, a quad pod.
0:50:14 > 0:50:16It's a bit like a tripod, but it's got four legs
0:50:16 > 0:50:20and lets us get the camera very, very low to the sea bed.
0:50:20 > 0:50:26This metal triangle is going to be the buoyant light rig,
0:50:26 > 0:50:30so it's like a little ray of sunshine down at the bottom
0:50:30 > 0:50:33of the sea, but this is the first time it's been used
0:50:33 > 0:50:36and we're going to find out if it works or not.
0:50:36 > 0:50:39Hugh has also designed an underwater crane
0:50:39 > 0:50:42to reveal the full complexity of the nest structure.
0:50:42 > 0:50:47But however good the equipment, the team will still have to find
0:50:47 > 0:50:50the 12cm-long fish in a big bay.
0:50:52 > 0:50:56For that, they turn to the expert.
0:50:56 > 0:50:5870-year-old Yogi Okata
0:50:58 > 0:51:01first discovered the mysterious crop circles
0:51:01 > 0:51:03and the puffer fish that makes them.
0:51:08 > 0:51:11He and his dive buddy, Toyo, are going to search
0:51:11 > 0:51:15several square miles of sea bed, hoping to locate a fish.
0:51:21 > 0:51:25Fish is very difficult, almost, camouflaged very well,
0:51:25 > 0:51:29like almost sandy, so just I can see shadow or just eye.
0:51:29 > 0:51:32So it's very difficult.
0:51:32 > 0:51:35But eventually Toyo and Yogi have good news,
0:51:35 > 0:51:40they've found what turns out to be the only male fish in the bay.
0:51:40 > 0:51:4112 metres, yeah.
0:51:41 > 0:51:44They've even drawn a map for Hugh to find it.
0:51:45 > 0:51:48If I get lost, I'll be holding this.
0:51:51 > 0:51:53Time to build the studio.
0:52:12 > 0:52:18All the kit is taken to the sea bed to be carefully assembled.
0:52:18 > 0:52:22The last thing in place is Hugh's little ray of sunshine.
0:52:31 > 0:52:35The fish won't start building a new nest for several days,
0:52:35 > 0:52:38so there's time to test his reaction to the kit
0:52:38 > 0:52:41while he fans his eggs on his old, disintegrating nest.
0:52:44 > 0:52:46He's certainly not camera shy.
0:52:48 > 0:52:51And now Hugh's had his first good look at the fish.
0:52:55 > 0:52:59The biggest surprise was the fish is a little bit smaller
0:52:59 > 0:53:01than I first hoped.
0:53:01 > 0:53:04In fact, he's only, well, he's really only about this big.
0:53:04 > 0:53:06So to suddenly be faced with a fish
0:53:06 > 0:53:09that's probably half the size of what I was hoping,
0:53:09 > 0:53:11I thought, "Well, this is going to be a little bit harder
0:53:11 > 0:53:12"than I first thought."
0:53:12 > 0:53:14Yogi and Toyo keep watch
0:53:14 > 0:53:18and it's not long before they spot the fish starting to construct
0:53:18 > 0:53:23a new nest, which Yogi expects will take him seven days to complete.
0:53:26 > 0:53:30He surprises everyone by finishing it in three.
0:53:33 > 0:53:36Yogi warns the crew to be ready at dawn the next day
0:53:36 > 0:53:39for a visit from a female fish.
0:53:41 > 0:53:44They spend three hours crouched over the camera
0:53:44 > 0:53:48to film the action as it unfolds, just as Yogi predicted.
0:53:55 > 0:53:59- So what happened?- Spawning!
0:53:59 > 0:54:01We've got it.
0:54:01 > 0:54:04The little chap was doing very well for himself.
0:54:04 > 0:54:07But the male built his nest so fast
0:54:07 > 0:54:10that Hugh never had time to film a top-down shot
0:54:10 > 0:54:14for the ultimate reveal of his hard work.
0:54:14 > 0:54:18This requires the crew to become builders, too.
0:54:18 > 0:54:21They build an A frame to hold the camera perfectly steady
0:54:21 > 0:54:24well above the nest.
0:54:39 > 0:54:44Yogi and Toyo position the frame near to the old nest.
0:54:48 > 0:54:50Now the crew just have to wait
0:54:50 > 0:54:54for the fish to finish tending his eggs and resume building.
0:54:59 > 0:55:03But a few days later, there's bad news.
0:55:03 > 0:55:06We've been watching a typhoon system far to the south of us
0:55:06 > 0:55:09for a number of days, and we haven't really felt its effects until now,
0:55:09 > 0:55:13and today was going to be the first day of the puffer fish
0:55:13 > 0:55:16beginning its next cycle of nest building,
0:55:16 > 0:55:18and it's been completely blown.
0:55:20 > 0:55:22So rather than going in with the cameras
0:55:22 > 0:55:25and starting the new cycle, we're actually going in
0:55:25 > 0:55:28just to recover equipment, which is a real shame,
0:55:28 > 0:55:30cos we don't know what's going to happen next, really.
0:55:43 > 0:55:47It's five days before the storm blows through.
0:55:47 > 0:55:51Finally, the sea calms down and the visibility returns.
0:55:55 > 0:55:58But for Yogi and Toyo, it's back to square one.
0:55:58 > 0:56:01They must find the fish all over again.
0:56:01 > 0:56:07Day after day they search, and Toyo, acting as interpreter, reports back.
0:56:07 > 0:56:12Erm... No nest, no male.
0:56:14 > 0:56:16The news gets slightly better.
0:56:16 > 0:56:19We find a fish.
0:56:19 > 0:56:21Just one fish but no nest.
0:56:24 > 0:56:30We find the male at the 20 metre deeps,
0:56:30 > 0:56:32but not make circle.
0:56:33 > 0:56:36The storm has put the fish off his construction work.
0:56:39 > 0:56:42Time is up and the team reluctantly start to dismantle
0:56:42 > 0:56:43the underwater studio.
0:56:46 > 0:56:49But the fish has one more surprise in store.
0:56:49 > 0:56:52Well, it just couldn't come at a later point, the last dive.
0:56:52 > 0:56:55We're...we're going in to pull out the kit,
0:56:55 > 0:56:59and there's a male making a nest.
0:57:03 > 0:57:08One final chance to get the perfect top shot from the A frame.
0:57:28 > 0:57:33A shot that truly does justice to the fish's extraordinary artistry.
0:57:39 > 0:57:42Next time on Life Story,
0:57:42 > 0:57:48animals raise offspring with great commitment,
0:57:48 > 0:57:50bad behaviour,
0:57:50 > 0:57:52lessons to be learned
0:57:52 > 0:57:55and life and death choices.
0:57:56 > 0:58:00Success means leaving a legacy for the future.