Luck seems to have run out for many Western Australian coral reefs, as an off-the-charts marine heatwave leaves a trail of bleaching and coral death.

South Padre Island shark attack survivor featured on 'Shark Week' Here's how to watch the dramatic shark encounter on TV.

There were two documented sightings of great white sharks off the coast of Bailey Island, the site of Maine's first fatal shark attack.

This week, a downwind foiler was mauled by a shark in the Canary Islands.

A shark was spotted swimming in the shallows near a popular South Padre Island beach just one year after a horrific attack left a woman severely injured.

The sighting of the basking shark, which was between 25 and 30 feet long, was captured on video.

"White shark spotted 40 feet off North Beach Island (Chatham)," reads the shark alert on the Atlantic White Shark Conservancy's Sharktivity app.

The biggest tagged white shark, Contender, has been spotted in Massachusetts waters this July.