Ion – Residency
11th sighting in Salish Sea
Ion @22554
Aug 21 – 26, 2026 · Salish Sea
Herring Season, Salish Style
Tide lines stacked with herring and me showing up hungry, right on cue.
76 m
Deepest dive
3:49
Longest dive
19
Dives
- Sightings
- 3
- Days between first and last sighting
- 5
Dive stats modelled within real depth limits — not measured
Get actual dive data with Risa Deep →| Sighting | Seafloor | Sea temp | Deepest dive (modelled) |
|---|---|---|---|
| Aug 21, 2026 | 175 m | 14.9°C | 76 m |
| Aug 26, 2026 | 203 m | 14.3°C | 75 m |
| Aug 26, 2026 | 205 m | 14.2°C | 71 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
76 m
Deepest dive
3:49
Longest dive
19
Dives
34 m
Avg dive depth
3
Sightings
5
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 (175 m) and the published dive-behaviour distribution. Modelled, not measured.
Deep Effort Score
DeepPlace
Where this happened · Aug 21, 2026
measured- Seafloor depth
- 175 m
- Sea-surface temperature
- 14.9°C
- Distance from shore
- 9.0 km
Across the residency · 3 sightings
measured- Seafloor depth
- 175 m – 205 m
- Sea-surface temperature
- 14.2°C – 14.9°C
- Distance from shore
- 6.0 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.