Humpback whale playing at ocean surface | Megaptera novaeangliae | Vava'u, Tonga
Humpback whale (Megaptera novaeangliae) playing on the ocean surface in an unusual position. The whale is flipped over on its back, raising its fluke high into the air and slapping the surface repeatedly with the dorsal surface of its posterior. The whale is using its pectoral fins to maintain balance while engaging in acrobatics.