Hydra – Residency
45th sighting in Salish Sea
Hydra @4666
Jul 10 – Sep 26, 2026 · Salish Sea
Herring Light, Every Summer
Kelp edges, herring shine, this stretch of sea knows me well.
98 m
Deepest dive
3:35
Longest dive
52
Dives
- Sightings
- 6
- Days between first and last sighting
- 78
Dive stats modelled within real depth limits — not measured
Get actual dive data with Risa Deep →| Sighting | Seafloor | Sea temp | Deepest dive (modelled) |
|---|---|---|---|
| Jul 10, 2026 | 85 m | 13.8°C | 75 m |
| Jul 13, 2026 | 113 m | 14.7°C | 85 m |
| Aug 26, 2026 | 184 m | 15.7°C | 78 m |
| Sep 7, 2026 | 380 m | 15.8°C | 98 m |
| Sep 15, 2026 | 192 m | 14.3°C | 77 m |
| Sep 26, 2026 | 332 m | 14.3°C | 85 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
98 m
Deepest dive
3:35
Longest dive
52
Dives
34 m
Avg dive depth
6
Sightings
78
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 (380 m) and the published dive-behaviour distribution. Modelled, not measured.
Deep Effort Score
DeepPlace
Where this happened · Sep 7, 2026
measured- Seafloor depth
- 380 m
- Sea-surface temperature
- 15.8°C
- Distance from shore
- 10.0 km
Across the residency · 6 sightings
measured- Seafloor depth
- 85 m – 380 m
- Sea-surface temperature
- 13.8°C – 15.8°C
- Distance from shore
- 5.0 km – 12.0 km
Sources: GEBCO seafloor grid · NASA JPL MUR sea temperature · PacIOOS coastline distance
Source records
This activity is assembled from 6 catalogued encounters on Happywhale.