Williamson Rocks
Harbor Seal, Steller Sea Lion · 10 reports from 8 observers, August 2020 to September 2026
In the atlas
Site 11.27 in the WDFW Atlas of Seal and Sea Lion Haulout Sites in Washington (Jeffries et al., 2000), surveyed in the late 1990s: harbor seal · 100 to 500 animals · used mainly at low tide.
On intertidal ledges and reef areas around Williamson Rocks (USFWS ID 81). Nursery area.
This entry was extracted from the atlas's tables by machine and has not yet been checked against the printed page. Its coordinates are the atlas's, in a 1927 datum, and may sit up to 200 m from where a modern map puts them.
Reports
Pinniped sightings reported within 500 m of this point, nearly all from iNaturalist. A report here says someone saw seals or sea lions near a known site; it does not say which animals, or how many.
Harbor Seal · 6 reports
| J | F | M | A | M | J | J | A | S | O | N | D | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2026 | 1 | |||||||||||
| 2025 | 1 | |||||||||||
| 2024 | 3 | |||||||||||
| 2023 | ||||||||||||
| 2022 | ||||||||||||
| 2021 | ||||||||||||
| 2020 | 1 |
Reports per month, as identified on iNaturalist by the people who filed them.
Steller Sea Lion · 4 reports
| J | F | M | A | M | J | J | A | S | O | N | D | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2026 | 1 | 1 | ||||||||||
| 2025 | 1 | |||||||||||
| 2024 | 1 |
Reports per month, as identified on iNaturalist by the people who filed them.
Photos from the reports. Each links to its source; the attribution is in the tooltip.
- Sep 26, 2026 · Steller Sea Lion · allison71019 on iNaturalist · 107 m away · source
- Aug 6, 2026 · Steller Sea Lion · kirt_onthank on iNaturalist · 334 m away · source
- Jun 7, 2026 · Harbor Seal · liz247b1l on iNaturalist · 139 m away · source
- Jul 19, 2025 · Steller Sea Lion · lisaweber45 on iNaturalist · 386 m away · source
- Jul 7, 2025 · Harbor Seal · rdwoodruff on iNaturalist · 104 m away · source
- Aug 9, 2024 · Harbor Seal · conormcmahon on iNaturalist · 104 m away · location approximate (±2740 m) · source
- Aug 9, 2024 · Harbor Seal · conormcmahon on iNaturalist · 104 m away · location approximate (±2740 m) · source
- Aug 9, 2024 · Harbor Seal · conormcmahon on iNaturalist · 104 m away · location approximate (±2740 m) · source
- Jul 12, 2024 · Steller Sea Lion · daver on iNaturalist · 208 m away · source
- Aug 16, 2020 · Harbor Seal · ali_interprets on iNaturalist · 101 m away · source
Of 10 reports, 4 state a location accurate to within 500 m, 3 state no accuracy, and 9 carry a photo. Reports rarely say how many animals were present, so no counts are shown.
Nearby sites
- Allan Island/NW End · 2.0 km · harbor seal
- Burrows Island/West Side · 3.8 km · harbor seal
- Bird Rocks · 5.7 km · harbor seal
- Bird Rocks · 5.7 km · harbor seal
- Bird Rocks · 5.8 km · harbor seal
- Belle Rock · 5.9 km · harbor seal