In footage from the attack, the man screamed for help while a fin circled above the water. The man had been snorkeling in the water with a colleague during his lunch break when the attack occurred, Tristan Oliveria, the base’s commanding officer, said.

Swimming 900 miles won’t be “the worst way to spend four months,” Catherine Breed says — as long as the great whites, jellyfish and elephant seals leave her alone.

Recent shark bites near Florida’s coast are prompting awareness in Alabama as similar Gulf conditions and species span the region. What to know.

A pair of surfers got a surprise on Wednesday when a great white shark stalked within a couple feet of them in the waters off Pismo Beach. “It’s insane,” said David Steiner, a local surfer who caught the moment on camera.

Rick Walker was 9 when he began competitive swimming. He’s still doing it at 75. “It becomes addictive,” said the Sarasota Sharks Masters icon. Missy Cleary can relate. She began swimming at 6 and competing at 11. The Sharks Masters swimmer is going ...

Jon Dodd, executive director for the Atlantic Shark Institute, discusses how common shark sightings are in Connecticut.