Humpback Whale Lying On Its Back Slapping Its Pectoral Fins In The Water

humpback whale lying back flip roll slapping emerge surface sea aerial swimming pectoral fin slapping pectoral fin water pectoral splash pec slapping flap slap ocean whale watching whale mammal freedom playful tail humpback fin natural fluke aquatic summer flipper open communicate habitat environment animal behavior nature flipper slapping marine cetacean spin sunny island bay wave behaviour