Sharks pose Sydney food-chain puzzle

Three shark attacks in Sydney in three weeks drove newspapers and talk show hosts into a feeding frenzy and sent a collective shudder through the other species at the top of the food chain -- humans.

Man vs. Shark: Australia's battle for the deep

Rolling from his surfboard, blood gushing from the wound where a shark had just ripped a big chunk of flesh from his thigh, Australian Glen Folkard had just one thought: "I'm alive."

Bull shark 'baby food' under extreme threat

Juvenile bull sharks generally remain inside rivers, sheltered by mangroves while they are young and more vulnerable to predators, before moving out into coastal habitats. Until now, scientists assumed they relied on these ...

2012 US shark attacks highest since 2000

Shark attacks in the U.S. reached a decade high in 2012, while worldwide fatalities remained average, according to the University of Florida's International Shark Attack File report released today.

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