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Pacific White-Sided Dolphin


Scientific Name:
Lagenorhynchus obliquidens
Length:
1.7-2.5 m (5.5-8.0 ft)
Weight:
135-180 kg (300-400 lbs)
Status:
good to go
Prey:
Squid and small schooling fish.


Physical characteristics

Large body and short beak. Unusually large, curved dorsal fin. Their back, fluke, and lips are black. Their sides, dorsal fin, and flippers are gray. Their belly is white. On both sides of the dorsal fin, a white or light gray stripe, extends from the eyes to the tail.

Behavioral characterization

Extremely playful, highly social. Can be seen "bow riding" and doing somersaults. Often seen with other cetaceans, such as Northern right whale dolphins and Risso's dolphins.

Distribution

Pelagic. Western Pacific Ocean from the South Bering Sea to southern Japan.

Population size

900,000

Predators

Humans, Orcas, Sharks

Migration/Dispersal patterns

N/A

Social system/Group size

Generally, group size ranges from 10-100 animals. Can be seen in pods of up to 1,000 animals.

Major threats

By-catch. Harpooning and drive fisheries in Japan.

Research efforts

Erin Rechsteiner-research on diet, distribution, and food requirements

Fun fact

N/A