Adult Dall's Porpoise (Phocoenoides dalli) surfacing in Southeast Alaska, USA. Note: Dall's porpoise is one of the fastest cetaceans in the world!

dalls porpoise phocoenoides dalli southeast alaska cetacean mammal odontocete phocoenidae cetacea cetaceans odontoceti toothed animal water sea ocean oceanic marine underwater swimming america north america us usa united states northern hemisphere aerial action active motion movement alaskan one alone single solitary individual