CalCOFI.io CalCOFI.io open data ecosystem
Species · accepted · checked 2026-08-05

Zalophus californianus

California Sea Lion

WoRMS 255003ITIS 180621key worms:255003
i

2026-08-05: itis_id 180621 via WoRMS external link

Silhouette · Margot Michaud · CC0 1.0 · PhyloPic, drawn from Zalophus japonicus
California Sea Lion2.4 m
a person1.7 m

max · sealifebase

Photograph of Zalophus californianus
Photo · Liam Steele · CC BY 4.0 · inat

The California sea lion is a coastal eared seal native to western North America. It is one of six species of sea lions.W CalCOFI holds 1,470 observations of it in 1 dataset between 1987 and 2020.R

1,470
observations
1,470
records
1,470
sampling events
1987–2020
years
1
datasets

Observed in
i

One row per dataset, one cell per year, darker with more observations — the same strip the front door draws per dataset. Each row ends with the name that dataset uses (dataset_taxon); the accepted name is written once, in the title above. A quiet pill marks a name the authority does not accept.

  • Seabirds & Marine Mammals 1,470 obs · 1,470 events · 1987–2020
    name used: Zalophus californianus California Sea Lion · code CASL

How big is it
i

Every mark is a measured length with its own source — hover one to read it. The reference objects are _data/size_reference.csv: two of them, the 505 µm bongo mesh and the net's ring, are CalCOFI's own sampling gear.

Groups

calcofi:marine_mammals

Ways in
i

Read from taxa.json of release v2026.09.11, written at release by calcofi4db::build_taxa_catalog(). The catalog's index is /species/.

Explorerdb-query
ERDDAPCalCOFI's own server, the Seabirds & Marine Mammals table constrained to this taxon
https://erddap.calcofi.io/erddap/tabledap/farallon_bird-mammal.html?&taxon_key=%22worms:255003%22