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

orca killer predator whale cetacea cetacean mammal animal sea pacific oceanic ocean water underwater marine wild aquatic wildlife sea life northern hemisphere odontocete odontoceti toothed delphinidae north america north american united states alaska alaskan surface one alone single solitary individual young behaviour tail tail slapping tail slapping action active motion movement juvenile calf calves