Marine Animals
Why is oil so deadly for birds' feathers?
Oil spill incidents always involve birds being rescued and cleaned – but why is oil so damaging, and in many cases fatal, to birds?
Meet the animal that's part vegetable and able to embed plants into its own body tissue - yes really!
The Costasiella sea slug is a rare example of a photosynthetic animal, says Stuart Blackman. Here's what's so special about it
Weirdest sea creatures - meet 15 strange ocean animals, including one that's part vegetable and one that resembles a toast rack
Have you heard of the Johnson's abyssal seadevil? Read about this strange ocean animal and more in our guide to the world's weirdest sea creatures
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“It took me a few seconds to register what I was seeing.” Diver makes incredible discovery in Australian kelp forest
Researcher Océane Attlan just found a fish so rare it has only been recorded once since it was first discovered.
It's the length of a bus, weighs the same as a tank and can leap 12 metres high – oh and it's one of the world's best singers too...
Learn all humpback whales, giant sirens of the sea - from where they live to what they eat, and why they don't have teeth
Elusive tentacled animals that "avoid sunlight like the plague" spotted off coast of Norway
OceanX explorers filmed the drifting red helmet jellyfish in the deep waters off the Scandinavian coast.
11 deadliest females on the planet: Discover some ferocious female animals that you wouldn't want to mess with
'For the female of the species is more deadly than the male' – here are our top 11 deadliest females that prove just that.
It's 15 metres long, weighs a humongous 45 tonnes, is covered in barnacles and travels up to an amazing 20000km a year
Discover all you need to know about gray whales, including how big they are, what they eat, lifespan and where they live
Researchers sink listening devices 1,100m deep off the Louisiana coast and hear the sounds of an elusive animal
Scientists used 3D acoustic technology to learn more about the diving behaviour of beaked whales – this is what they found.
Deep-sea explorers film massive animal drifting through darkness in South Atlantic Ocean
The rare giant phantom jelly was spotted during a science expedition off the coast of Argentina.
It’s the oldest individual living creature in the world, survives at 400m deep underwater and uses its ‘foot’ to move along the seafloor
A slower pace of life is behind the longevity of the world’s oldest ever animal, the ocean quahog
The US Navy detected a strange sound in the ocean. These scientists think it could be coming from the loneliest animal on the planet
Known as the “loneliest whale in the world”, the mystery 52-hertz whale sings at a different frequency from other baleen species – could it be lonely?
How and why do seahorses change colour?
Marine biologist and photographer Matt Doggett answers your wild question.
“This is no ordinary octopus.” Watch the weird sea creature that can walk on land – wait, what?
This amazing octopus species was only discovered in 2011
Why longer penises make sex safer
When it comes to this species, size is everything as it can affect survival.
It’s 2 miles deep, close to a volcano, the size of 233 soccer fields and home to a whopping 20,000 creatures
The world’s biggest octopus aggregation is made up of thousands of these usually solitary creatures
Measuring up to the length of a bus, these 5 creatures have the longest tentacles in the world
Discover the creatures that have the longest tentacles in the world – with some reaching up to 30 metres
What’s the difference between fringing reefs, atolls and barrier reefs?
Coral reefs may look similar at first glance, but their shapes, locations and structures reveal how they form – and how vulnerable they are.
“I immediately knew it was the largest tiger shark I’ve ever seen in my life. This was like a truck.”
A scientist has a close encounter with a shark – but something extraordinary comes to her rescue
Underwater ‘sirens’ and the loneliest whale in the world: 6 of the weirdest noises heard in the ocean (including an unsolved mystery)
While most of the ominous-sounding noises recorded in the ocean have been resolved, others remain a mystery...
A 136kg body part was just found floating in the ocean in Hawai'i
Whale placentas only float on the surface of the ocean briefly, so collecting them for scientific study is incredibly rare.
"A quick tap then startles their prey into fleeing straight into the open tentacles" – A shadowy hunter that waits silently for the perfect moment to strike
When a tap on the shoulder isn't good news
“I can’t express to you how rare this behaviour is”: 'tail walking' dolphin filmed in California
In this rare behaviour, the dolphins push themselves vertically out of the water and ‘walk’ along using their tail.
Extraordinary underwater photos of the fastest hunter in the ocean
Sailfish can reach speeds of almost 70mph and grow up to 3.4m long – these images of them hunting are utterly breathtaking.