Sentinel Rock
Harbor Seal · 4 reports from 4 observers, March 2024 to July 2026
In the atlas
Site 13.25 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.
Intertidal rocks and reef areas around Sentinel Rock (USFWS ID 32).
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 · 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.
- Jul 25, 2026 · Harbor Seal · nyxki on iNaturalist · 490 m away · source
- Jun 27, 2026 · Harbor Seal · sofie333 on iNaturalist · 295 m away · source
- Oct 23, 2025 · Harbor Seal · y2k-22 on iNaturalist · 216 m away · source
- Mar 13, 2024 · Harbor Seal · onychophore on iNaturalist · 275 m away · location approximate (±568 m) · source
Of 4 reports, 2 state a location accurate to within 500 m, 1 state no accuracy, and 4 carry a photo. Reports rarely say how many animals were present, so no counts are shown.
Nearby sites
- Sentinel Island · 342 m · harbor seal
- Speiden Island · 975 m · harbor seal
- Speiden Island · 1.3 km · harbor seal
- Speiden Island · 1.5 km · harbor seal
- Gull Reff · 1.8 km · harbor seal
- Rf Betw Gull Rf & Cactus · 1.8 km · harbor seal