Humpback whales (Megaptera novaeangliae) co-operatively "bubble-net" feeding (note the baleen hanging from the upper jaws) Chatham Strait, Southeast Alaska, USA. Pacific Ocean.

humpback whales rorguals mammal megaptera novaeangliae whale cetacean group of animals pod bubblenet bubble net bubble net feeding surfacing splashing behaviour lunging mouth open texture tubercles ventral grooves baleen plates pacific ocean upper jaws