Mystery – Residency
10th sighting in Salish Sea
Mystery @28507
Aug 5 – Sep 7, 2026 · Salish Sea
Cold Water, Full Nets
Herring thick enough to taste from a mile off — good month.
95 m
Deepest dive
3:51
Longest dive
43
Dives
- Sightings
- 3
- Days between first and last sighting
- 33
Dive stats modelled within real depth limits — not measured
Get actual dive data with Risa Deep →| Sighting | Seafloor | Sea temp | Deepest dive (modelled) |
|---|---|---|---|
| Aug 5, 2026 | 106 m | 14.4°C | 32 m |
| Aug 23, 2026 | 134 m | 14.4°C | 95 m |
| Sep 7, 2026 | 125 m | 15.4°C | 50 m |
Seafloor and sea temperature measured · ✳ dives modelled
Deepest dive against the seafloor, per sighting
Seafloor · measured Deepest dive · modelledDepth runs down from the surface. The modelled dive never passes the measured seafloor at that sighting.
Dives
95 m
Deepest dive
3:51
Longest dive
43
Dives
21 m
Avg dive depth
3
Sightings
33
Days first → last
Dive metrics are modelled within real depth limits — not measured
Get actual dive data with Risa Deep →Dive profile
modelledDepth shaped by the seafloor limit here (134 m) and the published dive-behaviour distribution. Modelled, not measured.
Deep Effort Score
DeepPlace
Where this happened · Aug 23, 2026
measured- Seafloor depth
- 134 m
- Sea-surface temperature
- 14.4°C
- Distance from shore
- 9.0 km
Across the residency · 3 sightings
measured- Seafloor depth
- 106 m – 134 m
- Sea-surface temperature
- 14.4°C – 15.4°C
- Distance from shore
- 4.0 km – 9.0 km
Sources: GEBCO seafloor grid · NASA JPL MUR sea temperature · PacIOOS coastline distance
Source records
This activity is assembled from 3 catalogued encounters on Happywhale.