Marine Animals
How did whales get so darned big?
Just how did whales get so big? We take a look at the evidence
'Supergiant' crustaceans the size of bread loaves are thriving in Earth's deep oceans, say scientists
The world's largest amphipod is not as rare as previously thought – instead it is a remarkably widespread deep-sea species thriving across vast and extreme ocean depths, a new study reveals.
Explorers film ethereal tentacled creature drifting through the twilight zone
These mystical animals are known for their remarkable escape strategy – when in danger, they detach their own tentacles to get away.
Are there killer whales in UK waters?
Orcas are found in every ocean in the world and can be seen in the UK – if you’re very lucky
Deep-sea scientists make "incredible discovery" on 35-day expedition in South Atlantic
With the help of their remotely operated vehicle, the team found magical coral gardens, rare hydrothermal vents and mysterious creatures.
Staggering footage shows 'vampire' creature drifting through deep ocean
This denizen of the deep sea is rarely filmed alive.
Diver films strange animal "ballet" in Bali
When they swim together in a close group, striped eel catfish look much more intimidating to potential predators.
When researchers hid a camera off the coast of South Africa, a "creepy creature" appeared and attacked this shark
Shark “finds out the hard way” why it shouldn’t mess with this bizarre ocean animal.
“A sight few have ever witnessed”: blue whale gathering stuns wildlife watchers in San Diego
Blue whales are the largest animal on the planet but finding them in the vast ocean can take hours of searching.
This adorable baby animal looks like the cutest little alien – you'll never guess what it turns into
Scientists have shared soothing footage of the tiny marine larvae fluttering through the water.
“Life at its most mesmerising”: Sir David Attenborough reveals the natural wonder that took his breath away
When Sir David Attenborough first dived on a coral reef, he was so astonished by the mesmerising spectacle that he forgot to breathe.
Pom pom crabs wear clumps of venomous anemones as gloves – Sir David Attenborough reveals why
Ocean with David Attenborough was released on his 99th birthday to showcase the vital importance of the ocean for all life on Earth – and it includes some remarkable footage.
80 years ago, a cargo ship struck a mine and sank to the bottom of the Mediterranean Sea. Then something staggering happened
Over time, the wrecked ship began to corrode and crumble – attracting some extraordinary creatures.
How do whales breastfeed underwater?
Do whales produce milk? Do whales have nipples? How does it all work underwater? Read on to find out all the whale nursing facts you've been wondering about.
“Our silver bullet”: Experts are racing to save these native crayfish from invasive species that bring a fungal ‘plague’
The white-clawed crayfish is disappearing from Britain’s waterways. But we’re not giving up on this little crustacean just yet.
Sea otters are suddenly flourishing along the Monterey Peninsula – for a surprising reason
The otters appear to be benefiting from the dramatic disappearance of another marine predator.
From venomous sex to maternal sacrifice: 7 fascinating facts about octopuses
From venomous mating rituals to post-birth starvation, these remarkable facts reveal just how weird and wonderful octopuses really are
“It was pure chaos!” Diver stumbles across huge tentacled animal in Australia
Underwater videographer shares incredible footage of the moment he discovers an enormous lion's mane jellyfish.
When this filmmaker went out to sea in the Philippines, he wasn’t expecting to see this
Boogs Rosales was on a boat at Kimud Shoal dive site just off Malapascua Island when a shark leapt metres out of the water right in front of him.
Nature’s most devoted mother starves herself for an epic 4 years – so her babies get the best start – with devastating consequences
One deep-sea octopus mother can brood her eggs for over four years, ultimately dying to ensure the survival of her offspring.
What animal has the biggest brain?
Did you know the largest brain of an animal weighs a whopping 7.8kg? But which animal does it belong to?
Massive marine sanctuary the size of Yosemite created in the South Atlantic Ocean
Patagonia Azul Provincial Park aims to protect one of the most biodiverse areas of the South Atlantic, home to whales, sea lions and over 50 species of seabirds.
These are the deadliest octopuses in the world – and one has enough venom to kill dozens of humans within minutes
All octopuses produce venom, but very few are actually deadly. From the lethally infamous blue-ringed octopus to lesser-known species with surprising tactics, discover which octopuses possess potent venom
These toxic ‘water balloon’ fish contain enough poison in their gonads to kill 30 humans – and they draw sand circles to impress a mate
This marine creature also has an unusual set of gnashers – or 'beak'.