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A dark California sea lion sitting up on a dock.
Photo: Jonathan Eisen, CC BY 4.0, via Wikimedia Commons

California Sea Lion

Zalophus californianus

A noisy, playful sea lion of the Pacific coast that swims up to 30 miles per hour with its front flippers.

About the California Sea Lion

Male California sea lions are about 8 feet long and weigh about 600 pounds, sometimes up to 1,000 pounds. Females are about 6 feet long and 220 pounds. They live along the Pacific coast from British Columbia to Baja California and in the Gulf of California. They eat herring, rockfish, anchovies, squid and octopus and can dive 1,000 feet deep.[1]

Quick facts

Scientific name
Zalophus californianus[1]
Size
Males about 8 feet long; females about 6 feet.[1]
Weight
Males about 600 pounds, up to 1,000; females about 220 pounds.[1]
Lifespan
15 to 20 years in the wild; 25 to 30 in human care.[1]
Diet
Carnivore. Fish such as herring, rockfish and anchovies, plus squid, octopus and krill.[1]
Habitat
Coastal ocean waters and sandy beaches.[1]
Where it lives
Pacific coast from British Columbia to Baja California, and the Gulf of California.[1]
Group life
Social; gathers in large groups, especially to breed.[1]
Babies
One pup.[1]
Conservation status
Least Concern (IUCN Red List, assessed 2025).[2]

Fun facts

  • California sea lions can swim 25 to 30 miles per hour.[1]
  • They can dive as deep as 1,000 feet.[1]
  • To cool off, they flip sand onto their backs.[1]

Vocabulary

pinniped
A sea mammal with flippers, such as a seal, sea lion or walrus.
flipper
A flat limb used for swimming.
rookery
A place where animals such as sea lions gather to breed.
carnivore
An animal that eats mostly meat.
least concern
A conservation label meaning a species is widespread and not at risk of dying out soon.

See it in person

These zoos had this animal when we gathered our information, but animals sometimes move. Check the zoo's website or contact the zoo before you visit.

Sources

  1. [1] Smithsonian's National Zoo & Conservation Biology Institute. “California sea lion.” https://nationalzoo.si.edu/animals/california-sea-lion (accessed 2026-10-08)
  2. [2] IUCN Red List of Threatened Species. “Zalophus californianus (California Sea Lion).” https://www.iucnredlist.org/species/41666/294651011 (accessed 2026-10-08)

Facts last checked 2026-10-08.

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