Shark

Three men in a boat off Shellharbour, New South Wales, Australia managed to get to safety after the shark tried to attack them last Friday.

Consistent exposure to carbon dioxide, caused by increasingly acidic ocean water, could be damaging sharks' dermal denticles—the tiny, toothlike structures that cover their skin.

The video was shared by Arturo Islas Allende, who claims the company involved had not complied with safety regulations.

A 57-year-old man was 200 feet from the shoreline when a 10 to 12-foot shark decided to take a bite from his inflatable paddleboard, before chasing him and another man to shore.

Cretodus houghtonorum lived during the Late Cretaceous period, a time when a huge waterway divided North America.

Trackers went "crazy" over the weekend, says OCEARCH, a marine conservation nonprofit, as great white sharks migrated from Canada to the Gulf of Mexico for the winter.

Researchers have designed a material that blends ultra-high molecular weight polyethylene fibres (UHMWPE) onto neoprene, providing the possibility of light-weight shark-proof wetsuits.

A surfer had to be taken to hospital after a blacktip shark bit his right foot on Cocoa Beach Tuesday afternoon. He tells reporters he will be surfing again ASAP.

Orcas were dubbed killer whales after ancient sightings of them ganging up against other (frequently larger) whale species. More recently, they have also been known to attack and kill great white sharks.

Data from OCEARCH has shown that the Atlantic continental shelf waters off the coasts of North Carolina, South Carolina, Georgia and Florida are a winter "hot spot" for white sharks.

"You can see what looks like teeth marks and I just can't think of anything else that could have done this," a witness told British tabloid media. But experts say white sharks are not known in the region.

Wildlife photographer Euan Rannachan spoke to Newsweek about his underwater adventures with the apex predators.

Swedish couple Emma Andersson and Billy Ludvigsson spoke of the drama when they saved the lives of the British backpackers attacked by a shark in the Whitsunday Islands off the northeastern Queensland coast.

The shark skeleton is a short-finned mako (Isurus oxyrinchus), one of two living mako sharks.

The man encountered the predator in an area known as the "shark bite capital of the world."

The diver was hit by "a major adrenaline rush" as she encountered the huge creature.

Shark was likely attacked during "very violent" attempt at mating.

The huge ocean predator was hooked on October 5 by 8-year-old Jayden Millauro, who is the youngest member of the Port Hacking Game Fishing Club in Australia.

Hawaii police said divers recovered clothes identified as belonging to Alan Delatorre. They indicated "damage to the clothing to be attributed to sharks."

The shark hung on to the kayak for approximately five seconds before letting go and moving on. It left puncture marks and two teeth.

"I just jumped on my board…sitting there for a little while trying to get a wave in and thinking that next bite was about to come," said Mike Bruton, 29, who escaped without injury.

The video was captured by a camera strapped on the back of a great white shark, a species that can be found in surface- and deep-waters in all major oceans and has a lifespan of 70 years or more.

Jamie Hall said the shark bite occurred at a spot known as Nightcliff Jetty while he was fishing with friends on Saturday afternoon.

The victim was reportedly shaken,but unharmed. "She screamed so loud," a witness said. "I paddled over to her slowly and made her come toward me."

Blue sharks are considered "near threatened" globally, though there is no limit on catching them in the United Kingdom.

"I hope you enjoy your moment of glory," wrote one commenter, "and I hope for your sake karma doesn't come bite you hard the next time your out fishing for sharks."

"At first there was like two sharks and then there was a whole swarm of fish," Russell said, describing the moment that multiple sharks swarmed into the area and attacked.

"I have seen numerous sharks at Werri using drones, but this is the first time I have been able to warn anyone with the speaker system," said operator Christopher Joye, who released the footage online.

A passenger can be heard screaming "oh my God!" as body parts are seen flipping in the water.

"I was about 75 per cent sure I wasn't going to make it back to the boat," the fisherman said.