Whales and dolphins have a wide repertoire of ways to communicate with each other, from complex vocalizations to body language and even blowing bubbles. And after watching 44 captive belugas for the past eight years at Marineland of Canada, in Ontario, animal behavior researchers Elizabeth George and Michael Noonan say they’ve begun to decode belugas’ bubble language. They believe beluga whales blow bubbles that correspond to specific states of mind. Their observations raise some new questions about beluga whales’ social lives.