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It's only the size of 4 tennis courts… yet it could be the oldest place on Earth and home to some of the world's most formidable apex predators
“It was pure chaos!” This diver stumbled across a huge creature cruising through the ocean…
Underwater videographer shares incredible footage of the moment he discovers an enormous lion's mane jellyfish.
It strikes fear into swimmers around the world and sends people scrambling from the water – but what exactly is the point of a dorsal fin?
The dorsal fin is one of the most recognisable features in the animal kingdom, but it's far more than a dramatic silhouette. Here's why so many creatures have evolved one
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It looks like something from science fiction, has a 1m leg-span, can pinch with the force of a gorilla's bite and – terrifyingly – can climb trees…
‘It forms pods of up to 10,000 individuals and the water looks like it’s been whipped into a froth’
Advanced social skills and excellent teamwork help these cetaceans thrive around the world
"It possesses potent venom - a deadly neurotoxin that causes death by respiratory paralysis…"
It’s about the size of Spain, stretches 800km – and protects the planet from a whopping 5 metres of rising sea levels
The Ross Ice Shelf is in one of the most remote places on Earth, yet it holds enormous sway over coastlines thousands of miles away.
"They dodge death by hitting rewind. Even after a dead medusa has collapsed into a pile of mush, its cells can grow into polyps…"
Immortal jellyfish, and a few similar species, are said to be immortal. But how true is this claim? Dr Helen Scales explains.
The 12km long, bustling, coastal metropolis that's filled with thousands of homes and a vibrant, colourful community
Stretching across a dramatic 12-kilometre landscape, this vibrant and densely populated community operates with the efficiency of a major urban centre.
"This slashing can cause fatal wounds in humans…" 10 deadliest birds on the planet, including one with a highly lethal 12cm claw…
Are these the world's most dangerous birds?
"Its teeth were specially designed for a ‘grip-and-shear’ feeding strategy…" 6 animals able to kill a megalodon, the deadliest shark that ever lived
If you crossed paths with these prehistoric sea monsters out at sea, you’d be wishing for a bigger boat…
“It swam a colossal 3km to get there” – Surprising creature spotted on Alcatraz
In 2026, an unexpected animal swam from Angel Island to Alcatraz
They have strange beaks, bizarre bodies and can plunge more than 2.5km into the deep ocean… Are these the world's strangest whales?
They both spin silk, but what's the difference between spider silk and caterpillar silk?
What is silk? Is caterpillar silk the same as spider silk?
Richard Jones takes a look
How many wild dogs are there in the world? Scientists can't even agree…
"It's small enough to hold in your hand, but equipped with an underwater surveillance system worthy of a deep-sea spy…"
Does it really need this number of eyes?
It was the size of a car and had claws bigger than your arm – and no other creature like it has ever been found
This 2.6m-long prehistoric predator was the largest arthropod ever known, with enormous claws and the power to dominate ancient seas
It barks like a dog and howls like a human – and is a silent, deadly hunter
Meet the very aptly-named barking owl
What’s the biggest, heaviest eagle in the world? Meet the contenders – including a giant with a monster 3-metre wingspan
Eagles are one of the most majestic birds in the sky. We take a look at the biggest and most impressive
Its legs are as thick as wrists and it's able to rip monkeys from branches with its deadly talons: Meet the world's most powerful bird
What are harpy eagles? Where do they live and just how big are they? Learn all about this iconic eagle in our expert guide
How to help a beached, stranded whale or dolphin - and help save its life
A beached cetacean is a distressing sight, but there are ways you can help until the marine medics arrive, says British Divers Marine Life Rescue (BDMLR)
The monstrous, snake-like huge 8m long serpent fish that are known as “harbingers of doom”
Meet the mysterious oarfish, the deep swelling sea serpent that's known as harbingers of doom”.
10 deadliest cats in the world, including one that kills every 50 minutes: Meet the world's most efficient feline killing machines
Meet the planet’s fiercest and most ruthless felines
"Observations suggest that they can float to the surface for air and then sink down again – all without waking up…"
How exactly have these notoriously aggessive animals evolved to function under the water?
