Sharks

Though there are just six fatal shark attacks each year globally, going for a swim off the back of a boat is not a pastime undertaken lightly. Now there's a scientifically-proven device which deters sharks and enables far safer ocean swimming. Is keeping the kids safe worth US$3,000?

A new electronic tag has been attached to four tiger sharks in the Caribbean in a test of a new satellite-connected fish tracking system. Described by co-developer ESA as cheaper and more animal friendly, the new tags will help to monitor the sharks' migration patterns for years.

​​Fans of a still-surviving megalodon, rejoice – a new species of deep-ocean shark has been identified. At just 5.5 inches long (about 144 mm), however, the American Pocket Shark is a bit smaller than the prehistoric super-predator.​

Scientists at the University of Exeter have turned to Twitter for a better picture of the effect ocean plastics are having on sharks and rays. Summing these reports, they identified more than 1,000 individual sharks and rays seen entangled in ocean waste.

The now-extinct megalodon was the largest predatory shark to ever live, while the great white is currently the largest of the predatory sharks. It now turns out that both fish likely descended from a small, flat shark that skulked along the seabed.

​Less than two weeks after it proclaimed a ban on single-use plastic items, Canada has now taken another step toward protecting the environment, by banning the import and export of shark fins. It is the first of the G20 group of industrialized and developing nations to do so.

The blood of great white sharks found in the waters off the coast of South Africa has been found to contain quantities of heavy metals that would be dangerously toxic to other forms of marine life, according to a newly published study.

Capable of swimming at speeds of up to 74 km/h (46 mph), the shortfin mako is the world's fastest species of shark. Scientists now have a new understanding of how it's able to reach such speeds, and they believe that their findings could be applied to improving human technology.

To many of us, the great white shark is a mysterious and scary creature from the deep – but now it’s a little less mysterious. Scientists have sequenced the entire genome of the great white shark, revealing a few clues as to how these animals are so good at healing wounds and resisting cancer.

​Since at least 2004, surfers, swimmers and scuba divers have been able to buy an electronic shark-deterrent device known as the Shark Shield. Its patented technology is now being offered in a handheld speargun-like gadget, called the eSpear.

"Sue" is the most complete Tyrannosaurus rex skeleton ever found. Although the fossilized bones were unearthed 20 years ago, scientists recently discovered the remains of a previously-unknown shark that co-existed along with the dinosaur – and the fish has been named after a classic video game.

For millions of years, the apex predator of the oceans was a bus-sized shark known as the Megalodon. But around 2.6 million years ago they just disappeared. So what could wipe out a 50-ft (15-m) shark? According to a new study, the culprit was a series of supernovae exploding fairly close to Earth.