November 10, 2006—Mama must not have told these brothers not to play with their food.

On a sheltered beach in Argentina, a pair of killer whales takes turns rushing onshore to make easy meals of sea lion pups frolicking in the surf. But once their hunger has been sated, the massive orcas turn a captured pup into a living toy.

Witness this primal drama between predator and prey, and stay tuned for the twist ending that still has scientists mystified.