SEAK-5258 – Residency
9th sighting in Chatham Strait
SEAK-5258 @24123
Jun 15 – Aug 10, 2026 · Chatham Strait
Chatham Strait, Mid-Summer Run
Caught here twice this stretch — this channel and I go way back.
164 m
Deepest dive
5:12
Longest dive
20
Dives
- Sightings
- 2
- Days between first and last sighting
- 56
- Deepest dive on record
- 164 m · this residency
Dive stats modelled within real depth limits — not measured
Get actual dive data with Risa Deep →| Sighting | Seafloor | Sea temp | Deepest dive (modelled) |
|---|---|---|---|
| Jun 15, 2026 | 353 m | 9.6°C | 75 m |
| Aug 10, 2026 | 242 m | 14.2°C | 164 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
164 m
Deepest dive
5:12
Longest dive
20
Dives
39 m
Avg dive depth
2
Sightings
56
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 (242 m) and the published dive-behaviour distribution. Modelled, not measured.
Deep Effort Score
DeepPlace
Where this happened · Aug 10, 2026
measured- Seafloor depth
- 242 m
- Sea-surface temperature
- 14.2°C
- Distance from shore
- 1.0 km
Across the residency · 2 sightings
measured- Seafloor depth
- 242 m – 353 m
- Sea-surface temperature
- 9.6°C – 14.2°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 2 catalogued encounters on Happywhale.