The playful behavior of humpback whales is well known and has even been mentioned in classic American literature. Herman Melville, using the character Ishmael as his narrator in Moby-Dick, said of the humpbacks that they are “the most gamesome of species and light-hearted of all the whales, making more gay foam and white water than any other.”

He certainly got that right. Humpbacks must think they’re dolphins, a distant relative, though they’re at least 110 times heavier. They launch themselves out of the water, nearly clearing it, and flop onto the surface, usually on their back or side, creating a minor tsunami for nearby boats. They’re also known for tail slapping, pec slapping, peduncle throws, spy hopping and other behaviors.