Northern fur seals only pass through California waters on migration, spending the rest of the year far out in the North Pacific. The refuges sometimes listed alongside this species are inland waterfowl habitat and don’t reflect where a fur seal has ever actually turned up here; the real sightings come from open coastal water.
Reports build through the year and peak twice, once in July (90 records) and again in September (96), a pattern that lines up with the species passing along the coast during its fall migration rather than settling anywhere close to shore. NatureServe lists it S1, critically imperiled in California, on top of a global Vulnerable status, so even a modest run of sightings carries real weight for an animal with genuinely few individuals reaching state waters.
Records split close to evenly between iNaturalist photos (364) and museum and survey data (380), fitting a seal that’s occasionally caught on camera near shore and regularly documented through specimen work farther out to sea.
Full species profile
