Great white sharks are observed leaping out of the water to seize seals. Included: researchers watch more than 27 of the sharks devour a whale carcass. "It did a lot to change my conceptions," says marine biologist Rocky Strong. "Great whites aren't slow cumbersome animals...just mercilessly but slowly swimming through the seas consuming things. They actually are vigorous, active predators that chase down their prey. And their prey are agile sea lions---no easy prey by any means."