Sperm whales that steal fish from fishers' lines have been caught red-handed in new underwater videos released this week. At depths of 328 feet (100 meters), the massive mammals were shown plucking the fishing line at one end to free the tasty black cod at the other end—like shaking apples from a tree, scientists say. This behavior, captured by cameras attached to fishing gear, had never before been recorded. That's because sperm whales—which have the biggest brains of any animal. (source: news.nationalgeographic.com)
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