As vaccines candidates are being developed to cure coronavirus, some developers use squalene - an ingredient found in shark liver oil. Wildlife experts fear that millions of sharks may be killed if vaccine developers don't look for alternative sources.

Around half a million sharks may be slaughtered in an effort to make a Covid-19 vaccine, wildlife experts have claimed. The top predators are harvested for squalene, a natural oil made in the liver of sharks, which is used medicine - including in current flu jabs.

Sharks produce squalene, a natural oil made in their livers, which is an ingredient in several COVID-19 vaccine candidates.

There is a place in Africa where two ancient predators come face to face - the shark and the crocodile. Usually worlds apart the two are forced to share the waters of a cozy bay and compete for the same prize. For many of the inhabitants this is a dangerous land. For a young crocodile life is particularly challenging. This is his story - a journey into predator bay.

The partial skull of an armoured fish that swam in the oceans over 400m years ago could turn the evolutionary history of sharks on its head, researchers have said. Bony fish, such as salmon and tuna, as well as almost all terrestrial vertebrates, from birds to humans, have skeletons that end up made of bone. However, the skeletons of sharks are made from a softer material called cartilage – even in adults.

Grey reef sharks work together and form social groups that can last for years, according to a study. Scientists who monitored a shark population off the remote Palmyra Atoll, to the south of Hawaii in the Pacific Ocean, noticed the predators formed tangled webs of social bonds.

Cape Town residents don't know who to blame for the disappearance of their great white sharks, which haven't been seen this year in False Bay.

A record number of countries have voted to protect the world’s fastest shark from extinction in a move welcomed by conservationists as a “wake up call” for fishing nations who have ignored the endangered species’ decline.

Scientists believe they may have discovered the world’s oldest living vertebrate.

We all know sharks have had a bit of an undeserved bad rap (thanks Jaws!). But if you're one of those people who find sharks scary, this newly identified species of pocket shark might just change your mind.

When I reached the world’s pre-eminent sculptor of long-dead monsters, he was standing atop a ladder inside a 16-foot-tall section of a megalodon tail that was propped upright in his warehouse-size studio. “I’m sorry if it sounds like I’m inside a bathroom,” Gary Staab said on his cellphone. The tail was part of a 52-foot-long, life-size model of the prehistoric shark that Staab was custom-building for the Smithsonian’s National Museum of Natural History.

It was on a family visit to Hong Kong that Kristyn Wong-Tam noticed her uncle – a well-regarded chef – was the only person at the table not touching a bowl of shark fin soup. When he explained how fins are hacked from struggling sharks, before their bodies are tossed back into the water, the rest of the family soon lost their appetite.

Sharks are pretty eclectic eaters. They'll go for prey ranging from fish and invertebrates to sea mammals and turtles. A shark may even have a chomp on the odd surfer. If they can catch it, or scavenge it, and it's made of meat, sharks will generally

Researchers studying Great White sharks have found lethal levels of mercury and arsenic

Better to run than to have your liver squeezed out.

Sharks could soon become more numerous in Hawaii waters – and advocates say that’s a good thing. Lawmakers in Honolulu advanced a proposed ban on killing sharks in state waters on Wednesday, after receiving hundreds of calls and letters of support from around the country. The law, which would provide sweeping protection for any shark, rather than select species, could be the first of its kind in the United States.

The enormous predator, known as 'Deep Blue', was first seen by diver and photographer Mark Mohler and Kimberly Jeffries on Sunday last week nine miles from the coast off the Hawaiian island of Oahu.

The Greenland shark is the longest-lived vertebrate on the planet, a new study says. The animal, native to the cold, deep waters of the North Atlantic, can live to at least 272 years—and possibly to the ripe old age of 500. (Related: "Meet the Animal That Lives for 11,000 Years.") “We had an expectation that they would be very long-lived animals, but I was surprised that they turned out to be as old as they did,” says study leader Julius Nielsen, a biologist at the University of Copenhagen.

A new study suggests that climate change could cause sharks to become "right-handed" and deadlier, which could send marine ecosystems into imbalance. A group of Port Jackson sharks, when incubated in water warmed to projected ocean temperatures at the turn of the century if greenhouse gas emissions continue at their current pace, most became "right-handed," which could cause changes in behavior that impacts marine ecosystems, according to research published in the journal Symmetry.

Bowing to pressure from wildlife groups and after the Post revealed how shark fin was still being offered on under-the-counter menu, popular restaurant chain vows to halt sales by January 1, 2020.