Young Orca (Orcinus orca) tail-slapping in Tracy Arm, southeast Alaska, USA.

orcinus orca killer whale delphinidae cetacean mammal odontocete southeast alaska pacific oceanmammals cetacea cetaceans odontoceti tooth toothed ocean oceanic sea surface us united states america american north america north american swimming coastal waters alaskan tail slap slapping tail slap tail slapping action movement motion spray calf calves juvenile juveniles offspring baby babies dorsal fin fins behaviour