Gerhard – Residency
3rd sighting in Lynn Canal & Stephens Passage
Gerhard @26699
Sep 18 – 29, 2025 · Lynn Canal & Stephens Passage
Lynn Canal & Stephens Passage · Sep 2025
45 m
Deepest dive
1:47
Longest dive
25
Dives
- Sightings
- 4
- Days between first and last sighting
- 11
Dive stats modelled within real depth limits — not measured
Get actual dive data with Risa Deep →| Sighting | Seafloor | Sea temp | Deepest dive (modelled) |
|---|---|---|---|
| Sep 18, 2025 | 32 m | — | 22 m |
| Sep 28, 2025 | 60 m | 12.2°C | 31 m |
| Sep 28, 2025 | 65 m | 12.2°C | 45 m |
| Sep 29, 2025 | 88 m | 11.7°C | 24 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
45 m
Deepest dive
1:47
Longest dive
25
Dives
17 m
Avg dive depth
4
Sightings
11
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 (65 m) and the published dive-behaviour distribution. Modelled, not measured.
Deep Effort Score
DeepPlace
Where this happened · Sep 28, 2025
measured- Seafloor depth
- 65 m
- Sea-surface temperature
- 12.2°C
- Distance from shore
- 1.0 km
Across the residency · 4 sightings
measured- Seafloor depth
- 32 m – 88 m
- Sea-surface temperature
- 11.7°C – 12.2°C
- Distance from shore
- 1.0 km – 2.0 km
Sources: GEBCO seafloor grid · NASA JPL MUR sea temperature · PacIOOS coastline distance
Source records
This activity is assembled from 4 catalogued encounters on Happywhale.