Pacific white-sided dolphins are extremely playful and highly social animals. They are often seen accompanying other dolphins and large whales. The average pod size is 10-100, but they may gather in pods of thousands. Pacific white-sided dolphins, Lagenorhynchus obliquidens, inhabit temperate, coastal waters in the North Pacific, avoiding both tropical or Arctic waters. Populations may also be found in the Sea of Japan and the Sea of Okhotsk. Commonly referred to as "lags" (a shortening of their genus). Length 170 – 250 cm. Weight 75 - 200 kg. Pacific white-sided dolphins feed on fish (such as herring, sardines, mackerel, hake, salmon, rockfish and capelin) and cephalopods (octopus, squid, cuttlefish). Natural predators include transient killer whales and large sharks. Accidental deaths occur when these animals get caught up in fishing nets. The maximum age recorded for a female Pacific white-sided dolphin is 46. The oldest male recorded is 42.
• Kingdom: Animalia
• Phylum: Chordata
• Class: Mammalia
• Order: Cetartiodactyla
• Infraorder: Cetacea
• Family: Delphinidae
• Genus: Lagenorhynchus
• Species: Lagenorhynchus obliquidens
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