California mammals

Orca in California

Orcinus orca

Native to California SNR Unranked in California

Not listed as nonindigenous in California by USGS NAS; native to its California range.

IUCN Red List status

DD – Data Deficient

Not enough information to assess extinction risk.

Orca in California, by the numbers

Common in California 79th most recorded of 241 mammals logged in California

594 occurrence records
558 with iNaturalist photos

Records from 2000–2026.

594 total records count every California occurrence from GBIF and iNaturalist; the map plots a georeferenced sample of 300; the monthly chart covers the 593 records with a full observation date.

When to look for the Orca in California

Most sightings fall in October.

593 California occurrence records (iNaturalist and GBIF) by month of year, 2000–2026. Shows when the species is recorded, not a guarantee of presence.

Monthly California records (table)
MonthRecords
January25
February7
March51
April85
May73
June43
July12
August38
September55
October122
November26
December56

Monthly orca occurrence records (iNaturalist and GBIF) in California, 2000–2026.

Seasonality

Year-round in California, with recorded sightings peaking in October, with a smaller rise in April.

Occurrence map

Where Orca has been recorded in California

300 records mapped · zoom and drag to explore

300 California records mapped

Notable places to look

Park, forest, or monumentiNaturalist records
Channel Islands National Park 6
Phillip Burton Wilderness Area 2
Point Reyes National Seashore 2
Torrey Pines State Reserve 1
Golden Gate National Recreation Area 1
Garrapata State Park 1
Half Moon Bay State Beach 1
Bolsa Chica Ecological Reserve 1

Protected places with the most orca sightings, from the USGS Protected Areas Database plus named mountain ranges, good spots to look, not a full breakdown, so they don't sum to the total.

Where it's recorded in California

CountyRecords
Humboldt County 16
San Francisco County 5
Santa Barbara County 4
Monterey County 4
Orange County 4
Los Angeles County 4
Marin County 4
Santa Cruz County 3
San Diego County 3
San Mateo County 3
Ventura County 2
Mendocino County 2
3 other counties 540

The complete county distribution, spread across 15 California counties. Every occurrence record falls in one county, so these sum to the total. Counties from GBIF and US Census boundaries.

Orca records belong offshore or along California’s Pacific coast, not in the state’s inland forests and deserts. Reports often follow the productive waters shaped by coastal upwelling, but they also reflect where boats and shore watchers spend time.

The deep Monterey Canyon, the continental shelf edge, and waters around the Channel Islands give observers access to very different marine habitats. Sightings don’t measure offshore population size, because effort concentrates near ports, whale-watching routes, and visible migration corridors.

The California record set combines 558 research-grade community observations with 421 museum and survey records. Monthly patterns can also reflect weather and observer activity, so they shouldn’t be treated as a direct count of animals.

Occurrence data from iNaturalist and GBIF.

More mammals in California in the atlas

Data & sources

The data and visualizations on this page draw on these open sources:

  • GBIFCC-BY 4.0occurrence records behind the range map, elevation, and record counts
  • iNaturalistCC0 / CC-BY / CC-BY-SAobservations, photos, and audio recordings
  • NatureServe ExplorerCC-BYthe state conservation rank
  • IUCN Red Listattributed factthe global conservation status
  • USGS NASpublic domainnative / introduced status
  • Natural Earthpublic domainthe relief basemap
  • USFSpublic domainnational-forest boundaries
  • USGS Protected Areas Databasepublic domainthe named parks, forests, and refuges behind "notable places to look"