Humpback Whales 'Mug' Boat in South Pacific (Video)

A new National Geographic video showing humpback whales in a graceful ballet around a passenger boat in the South Pacific is a whale-watcher's dream. Sometimes they stay for mere minutes, said Stephanie Stack, a marine biologist at the Pacific Whale Foundation in Hawaii. Regulations prevent boat captains from running their engines within 100 yards of a whale, Stack told Live Science.