An adult humpback whale repeatedly tail-lobbing in the inverted position (Megaptera novaeangliae), Chatham Strait in Southeast Alaska, USA

sealife sea life topside above water humpback whale megaptera novaeangliae cetacean cetaceans adult humpback whales adults chatham strait alaska usa pacific ocean surfacing nobody one animal splashing spray splash tail fluke flukes tail lobbing mammal mammals