Australian biologists said Sunday a great white shark measuring up to 12 feet likely killed a 57-year-old surfer off Sydney this weekend, as harrowing details of the attack emerged and authorities ...

Add Yahoo as a preferred source to see more of our stories on Google. Using a high-contrast top-down view emphasizes the shark's scale and the strange, mechanical nature of the shadow it is stalking.© ...

A surfer narrowly avoided serious harm after a shark threw him off his board in a sneak attack off the coast of Northern California. Emergency crews responded to the scene north of the Gualala River ...