- 1 day ago
Explore an underwater world of incredible creatures as the tiny residents of a coral reef prepare for the most important night of the year. Take the audience on a deep dive into a vibrant, shimmering underwater world to observe the tiny inhabitants of coral reefs—such as small fish, shrimp, starfish, and peacock mantis shrimp—as they reveal their extraordinary survival superpowers.
• 背景：聚焦于珊瑚礁中那些微小的居民，展现它们为一年中最关键的夜晚（珊瑚产卵期及夜间生存挑战）所做的准备。
• 值得关注的居民及其行为：• 小型红蟹：通过钳咬入侵的长棘海星的管足和棘刺，来保卫珊瑚群落。
• 孔雀螳螂虾：凭借独特的隐蔽技巧与惊人速度，在珊瑚礁中构建出结构精巧的洞穴。
• 斑三带雀鲷与护卫蟹：在严苛的群落等级制度中生存，并守护着分枝珊瑚间那些宝贵的缝隙与通道。
• 背景：聚焦于珊瑚礁中那些微小的居民，展现它们为一年中最关键的夜晚（珊瑚产卵期及夜间生存挑战）所做的准备。
• 值得关注的居民及其行为：• 小型红蟹：通过钳咬入侵的长棘海星的管足和棘刺，来保卫珊瑚群落。
• 孔雀螳螂虾：凭借独特的隐蔽技巧与惊人速度，在珊瑚礁中构建出结构精巧的洞穴。
• 斑三带雀鲷与护卫蟹：在严苛的群落等级制度中生存，并守护着分枝珊瑚间那些宝贵的缝隙与通道。
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TVTranscript
00:07Planet Earth is so spectacular, it's easy to miss the smaller things in life.
00:15But take a closer look, and there's a whole undiscovered world.
00:20A world where tiny heroes and little monsters need incredible superpowers to help them triumph against giant odds.
00:58Coral reefs are some of the most diverse places on the planet, home to massive shoals and magnificent creatures.
01:12But beneath them is a miniature metropolis, bustling with extraordinary little lives.
01:26These animals may be small, but the work they do is essential.
01:34And right now, they're busier than ever.
01:40Once a year, the reef stages a spectacular breeding event, vital to securing its future.
01:49But it's not easy being a small fish on a big reef.
01:56Tiny animals must overcome huge challenges to keep their coral city alive.
02:14The coral reef is as complex and crowded as any city.
02:22Each day starts busy and noisy.
02:30All the citizens calling to each other in a rousing underwater dawn chorus.
02:38Of popping mussels, snapping claws, and chattering tea.
02:53Only a healthy reef with a thriving community of tiny creatures sings this loud.
03:09Half the fish here are barely bigger than a bottle cap.
03:16But their services are in high demand.
03:28A turtle checks into the cleaning station for a little shell shine.
03:49It's a job too big for a tiny blenny to manage alone.
03:57So a crew of algae removal specialists help polish it off.
04:17A clownfish family is busy tending their anemone home.
04:25Few predators dare enter its stinging tentacles.
04:30But clownfish have a protective shield of mucus that allows them to live here permanently.
04:42In return, they keep the anemone clean and oxygenated.
04:51Hidden underneath, the male has 500 eggs to look after.
04:57Each smaller than a grain of rice.
05:05If they hatch on the same night the reef breeds,
05:08it will give them the best chance of survival.
05:17Until then, they should be safe.
05:21This is one of the most secure homes on the reef.
05:26And the family never stray far.
05:32Out here, there's always a bigger fish.
06:02Little damselfish take cover in the maze of coral.
06:07Beyond the grouper's reach.
06:11But this smart fish doesn't give up.
06:15He just calls in.
06:17More arms.
06:25An octopus may seem an unlikely accomplice.
06:30But together, they make a killer team.
06:36When the grouper changes its colors to camouflage,
06:41the hunt is on.
07:00it's double trouble for damselfish.
07:12It's double trouble for damselfish.
07:15The grouper locates their hiding place, then turns pale to point it out.
07:29Tentacles descend.
07:32Fish panic, straight into the grouper's jaws.
07:42It's a terrible choice.
07:46Stay put and risk the octopus's deadly reach.
07:52Or flee.
07:54And get picked off by the grouper.
08:04With no safe escape, sometimes the only option is to fight back.
08:18The damselfish mob the octopus and try to drive it away.
08:28But the commotion attracts even bigger fish.
08:40It's a chance for the little fish to make their escape.
08:50With shark circle.
08:54Suddenly, it's everyone for themselves.
09:04So much for teamwork.
09:16Large sharks don't bother with small fry.
09:21But by scaring off other predators, they help tiny animals get back to work.
09:32Grazers keep the reef free of algae.
09:38Allowing slow-growing coral to thrive.
09:47Coral is actually made up of colonies of tiny animals.
09:52And each one contains microscopic plant cells that convert light into food.
10:02An amazing alliance on which the whole reef is built.
10:10Together, billions of little lives create the largest living structures on Earth.
10:25But these coral cities are fragile.
10:31Vulnerable to warming seas.
10:35Pollution.
10:37Overfishing.
10:40And invasion.
10:45Crawling on hundreds of tube feet.
10:52Armed with venomous spines.
11:01A monstrous.
11:04Coral-eating.
11:06Crown of thorns starfish.
11:13It can devour hundreds of corals each year.
11:20And there's not just one.
11:23There's a whole army of them.
11:27Decimating the homes of all the tiny creatures.
11:38But unaware of the threat heading their way.
11:42The residents of the reef are busy.
11:45Preparing to breed.
11:48And searching for food.
11:55The most complex eyes in the animal kingdom.
11:59With four times as many color receptors as a human's.
12:03The peacock mantis shrimp sees the world in a completely different light.
12:13She's no bigger than a tube of toothpaste.
12:17But far from defenseless.
12:21She packs a punch that rivals the acceleration.
12:26Of a nine millimeter bullet.
12:30So fast it vaporizes water.
12:38And can even create a flash of light.
12:50But even well-armed mantis shrimp need a safe place.
12:57Her burrow.
12:59And soon to be her nursery.
13:03Once renovations are complete.
13:11She already has a male visitor.
13:15Looking for a mate.
13:18Or to steal her home.
13:27Either way.
13:30her lightning fists will make it very clear.
13:37She's not ready for guests.
13:44But this is a dangerous place to be caught out in the open.
13:47For a man.
13:57You're not here...
13:58A voracious predator.
14:07The size of a teacup.
14:11teacup a dwarf cuttlefish if this one is to reach breeding condition he needs to
14:22get bigger and that means a lot of eating but he's a soft target himself so
14:35the trick is to hunt without being hunted this master of disguise can change the
14:44color and texture of his skin to outwit predators and prey
15:02he'll live less than a year so he needs to grow fast eating pretty much anything that moves
15:14waving its arms to catch a meal of plankton
15:19a button-sized boxer crab seems oblivious to the threat
15:32a painful mistake
15:37this crab holds miniature stinging anemones in its claws
15:43tiny tasers defend off predators
15:50they're so effective rivals will do anything to get hold of them
16:04it's a remarkably delicate struggle
16:10neither crab wants to damage the anemones
16:17with his opponent in a lock the rival carefully extracts his prize
16:31now they have one each both crabs will split them to regrow a full pair of stinging gloves
16:44and enemies offer protection to all kinds of little creatures
16:51tiny see-through an enemy shrimp cohabiting with the clownfish
17:01they may only be the size of a paperclip
17:05but they are brave enough to do business with the big fish on the reef
17:18the shrimp advertise their services
17:21by rocking
17:26and if the customer is a predator
17:31they make sure their sales pitch is absolutely clear
17:35by clapping
17:53once she's sure it's safe
17:56one little shrimp gets to work
18:00exfoliating dead skin
18:03picking off parasites
18:05and cleaning the gills
18:16she even braves the jaws
18:18for a little dental hygiene
18:26health services provided by tiny cleaners
18:29are essential for keeping big fish in top condition
18:39all over the reef
18:42preparations for mating are underway
18:50the mantis shrimp is almost done building her nursery
18:57she's lifted a massive three kilos of debris to make it secure
19:06and cleared her emergency exits
19:09so she can keep her enemies guessing
19:14her building work is so extensive
19:17others find a home here too
19:24but she has one neighbor
19:27who's more of a problem
19:33a tusk fish
19:36one of the few fish known to use tools
19:41it even has its own anvil for cracking clams
19:52he's unlikely to eat a mantis shrimp
19:57but his smash and grab approach to feeding
20:00could wreck her home
20:04he shifts huge piles of rubble
20:07looking for food
20:20he's got what he wanted
20:24but now her nursery construction
20:26is way behind schedule
20:32as the day draws to a close
20:34the reef is getting busier
20:43the clownfish eggs are close to hatching
20:52and a fleet of cleaner wrasse are hard at work
20:55and a fleet of cleaner wrasse are hard at work
20:58only the length of the finger
21:00they're easily identified by their black and blue stripes
21:17but not all are quite as well intentioned as they appear
21:26a fang blenny
21:31this imposter changes his colors to mimic cleaner wrasse
21:36and slips among them unnoticed
21:44but he's not here to clean
21:54raking his fangs across the skin of the unsuspecting fish
22:00he steals a meal of scales
22:13and before his victims know what hit them
22:16this devious trickster disappears
22:20back to his lair
22:25operating undercover
22:26helps many little animals survive on a big reef
22:34it's how the dwarf cuttlefish has managed to stay alive
22:38and stay fed
22:47with each hunting success he grows bigger
22:58this female seems impressed
23:01and for once food isn't his first priority
23:13the mantis shrimp has been getting her home back in order
23:21clearing out clutter
23:24making sure everything's in place
23:29and adding the finishing touches
23:43finally
23:44she's ready to receive a guest
24:00just as the reef is set for the most important event of the year
24:04the coral killers arrive
24:15hordes of crown-of-thorns starfish
24:25extruding their stomachs
24:27they digest the coral's living tissue
24:33and leave only the white skeletons behind
24:48there seems to be little the reef residents can do
24:51to stop the swarm of starfish
24:54from devouring every coral in their path
25:08the home of this tiny crab
25:10is next on the menu
25:21no matter how hard she tries
25:25the starfish's body is almost impenetrable
25:33but the soft sensitive base of its spines
25:38is the chink in its armor
25:43time for one little crab
25:46to take down a monster
26:09contending with guard crabs
26:11just isn't worth the pain
26:23a diverse community of tiny creatures
26:26all playing their part
26:30keeps coral reefs healthy
26:32and far more resilient to the many threats they face
26:44even damaged areas of these living cities
26:47can regenerate
26:54once a year
26:55the perfect tide
26:57and the perfect temperature
26:59coincide
27:08tonight is the night
27:11when the reef itself
27:13begins to breed
27:21a tiny bundle
27:23only the size of a peppercorn
27:27all the ingredients to make baby corals
27:31in one package
27:36the coral is spawning
27:42many other little reef animals are breeding too
27:47the dwarf cuttlefish has secured his mate
27:55now it's time for her to tuck their eggs
27:58safely into the coral
28:03the mantis shrimp also has eggs
28:0620,000 of them
28:15and after one more clean from dad
28:21hundreds of clownfish larvae
28:23are cast adrift
28:35spawning together
28:36ensures as many new lives as possible
28:39are carried safely away on the tide
28:51soon
28:52small wonders are growing
29:00no bigger than a peanut
29:02a cuttlefish hatchling
29:04is just beginning its ocean adventure
29:13and perhaps most important of all
29:15a one millimeter coral planula
29:24drawn toward the sound of the reef
29:35a tiny brick
29:37that will grow into a mighty coral
29:41and help build a future
29:43for all the residents
29:44of this coral city
29:47alive
29:47and alive
30:16is living
30:16I don't believe