SEAK-5258 – Residency
7th sighting in Chatham Strait
SEAK-5258 @24123
May 17 – Aug 31, 2025 · Chatham Strait
Chatham Strait · May – Aug 2025
145 m
Deepest dive
6:50
Longest dive
31
Dives
- Sightings
- 3
- Days between first and last sighting
- 106
Dive stats modelled within real depth limits — not measured
Get actual dive data with Risa Deep →| Sighting | Seafloor | Sea temp | Deepest dive (modelled) |
|---|---|---|---|
| May 17, 2025 | 329 m | 7.6°C | 114 m |
| Jul 29, 2025 | 330 m | 13.7°C | 42 m |
| Aug 31, 2025 | 383 m | 14.5°C | 145 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
145 m
Deepest dive
6:50
Longest dive
31
Dives
28 m
Avg dive depth
3
Sightings
106
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 (383 m) and the published dive-behaviour distribution. Modelled, not measured.
Deep Effort Score
DeepPlace
Where this happened · Aug 31, 2025
measured- Seafloor depth
- 383 m
- Sea-surface temperature
- 14.5°C
- Distance from shore
- 5.0 km
Across the residency · 3 sightings
measured- Seafloor depth
- 329 m – 383 m
- Sea-surface temperature
- 7.6°C – 14.5°C
- Distance from shore
- 3.0 km – 5.0 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.