Since heading back into the ocean, cetaceans have evolved to gargantuan proportions. Sid Perkins investigates why whales became so huge.
One of the longest-living animals, which is also the world’s biggest clam, could have important stories to tell about Earth’s climate history.
Great white sharks, the world’s largest predatory fish, eat three to four times more food than previously thought, an Australian study shows.
An unexpectedly large and active community of single-cell organisms has been found living on the Pacific sea floor at the deepest site on Earth, scientists announced.
Like manic underwater gardens teeming with vibrant fish and corals in a kaleidoscope of colours, healthy coral reefs are among nature’s masterpieces. But, asks Amanda Burdon, how much longer can they survive?
Scientists are developing a new kind of glue to use inside the body, using a chemical trick used by salt-water mussels.
The caves of Slovenia are home to a tiny, blind salamander known as the olm.
Stunning photos of the hidden world under the ocean.
Miniature cameras attached to a penguin’s head have given Japanese scientists a bird’s eye view of the creature’s incredible underwater hunting skills.
Living on a starvation diet, strange life forms are thriving deep beneath the sea floor.