Dall's porpoise

Dall's porpoise is a small cetacean native to the North Pacific, recognized by its black-and-white coloration, blunt body, and fast swimming.

Porpoise: A toothed whale in the family Phocoenidae, typically small-bodied with a blunt snout and spade-shaped teeth. Dall's porpoise belongs to this family of small toothed whales.
Cetacean locomotion: Movement in water powered mainly by vertical strokes of a cetacean's tail flukes. Dall's porpoise uses powerful tail strokes to achieve its characteristic speed.
Gillnet: A fishing net that entangles fish by their gills or bodies as they swim into its mesh. Dall's porpoises can become entangled and drown in fishing gillnets.
North Pacific Ocean: The northern part of the Pacific Ocean, extending from Asia and North America to the Arctic Ocean. This ocean contains the species' entire natural range.
Cetacea: The mammalian order containing whales, dolphins, and porpoises. Its evolutionary and anatomical traits place it among cetaceans.
Echolocation: The use of reflected sound to detect objects and navigate through an environment. Dall's porpoise uses high-frequency clicks to locate prey and orient underwater.
Bycatch: Animals unintentionally captured or killed during fishing directed at other species. Incidental capture in fisheries is a major human-caused source of mortality.
Marine conservation: The protection and sustainable management of marine species, habitats, and ecosystems. Dall's porpoise illustrates conservation challenges spanning international waters and fisheries.
Phocoenidae: The family of toothed whales comprising the porpoises. This family provides the taxonomic home for Dall's porpoise.
Diving physiology: The physiological adaptations that allow animals to remain submerged while managing oxygen and pressure. These adaptations support its dives while it pursues prey below the surface.

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