Fish

What's the fastest fish?

Wondering how fast fish can swim? Stuart Blackman seeks out the record breakers
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There's a shark rush hour? Yes - scientists reveal the secrets of the ocean's 'Shark Highway'

This rush hour is one you probably don't want to get stuck in
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The largest dam-removal project in US history has finally been completed. Now something truly amazing is happening

Four dams were dismantled on the Klamath River – this remarkable video shows what happened when the final barrier fell...
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Meet nature’s deadliest sniper: This fish shoots down prey with lethally-accurate water jets, from over 3 metres away

How do sharks mate? Shark sex is a rarely seen but lively business – here’s how they do it

Just how do sharks mate? Stuart Blackman explains
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Great white shark: your expert guide to the ocean's ultimate apex predator that can detect blood from 3 miles away

All you need to know about great white sharks, including why they are not as deadly as often feared
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Do fish drink water?

Do fish drink? or do they absorb water? Stuart Blackman takes a look
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Meet the tiny shark that uses its saw-like teeth like a cookie cutter, ripping circular chunks of flesh from its prey

Discover the weird 'doomsday' fish, the eerie sea serpent-like monster that, according to legend, can 'foresee' deadly tsunamis

Meet the mysterious oarfish, the deep swelling sea serpent that's known as harbingers of doom”.
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World's grumpiest fish discovered in the Red Sea. And scientists have given it the perfect name

At less than 2cm long, this grouchy goby is a tiny but fierce predator
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There's a rare fish in the Red Sea that looks like a guitar – and it may soon be lost forever

The critically endangered halavi guitarfish could be extinct in a few years’ time if nothing is done to save it, say scientists
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Why is the blobfish so ugly?

We take a look at why the unfortunate blobfish has been labelled as the ugliest fish in the world
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Are rays just flattened sharks? No, say the experts at The Shark Trust, there's a bit more to it than that and rays and sharks are quite different...

Uncover the similarities and differences that set sharks and rays apart.
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Watch incredible footage of a tiny flamboyant cuttlefish hatching from its egg. Is this the cutest baby fish in the ocean? It's certainly the prettiest

See the moment this ‘walking’ cephalopod takes its very first steps
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Meet the eel that makes an astonishing 6,000 mile journey, from European rivers to the tropical Sargasso Sea - and back again

The incredible migrations of eels have long fascinated scientists. Phil Gates explores their epic journey and the reasons behind it
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This blind, poop-eating cavefish from Mexico tastes with its head. Scientists just figured out why

The development of taste buds on the head and chin of the cavefish are the result of intense environmental pressures – and a penchant for bat poop – a new study has found.
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Do fish have tongues?

Do fish have tongues? The answer is sort of... We explain
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10 deadliest fish: you won't want to meet these fearsome species underwater

Beyond the shark! We bring you a veritable who's who of the scariest fish species lurking in the deep (and not-so-deep) waters.
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Can fish move from pond to pond on duck's feet?

Just how do fish find a new pond? Could ducks feet be the answer? Stuart Blackman takes a look
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“Welcome to the most spectacular show on Earth!” Diver films incredible feeding frenzy from inside a sardine mega-shoal

One of the world's most magnificent wildlife spectacles takes place from May to July every year – take a deep dive into South Africa's remarkable sardine run.
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Clownfish guide: all you need to know about the amazing sex-changing, colourful real Nemo

Delve into the unique and complex biology of the clownfish, arguably the world’s most famous fish says Kush Patel
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Rarest sharks in the world: Before long many of these fascinating creatures could be extinct, warn Shark Trust

Uncover the mysteries of the ocean's most elusive predators with our roundup of the world's rarest species of sharks and rays
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“They are fish... but they can walk!" Amazed scientists discover exactly how mudskippers move on land

The unique anatomy of the amphibious fish has allowed it to master life both in and out of water.
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