Boreophausia – Residency
36th sighting in Chatham Strait
Boreophausia @5850
May 31 – Sep 6, 2026 · Chatham Strait
Chatham Strait, All Summer
Cold green water, good company, and every surface caught on camera.
123 m
Deepest dive
5:49
Longest dive
63
Dives
- Sightings
- 7
- Days between first and last sighting
- 97
Dive stats modelled within real depth limits — not measured
Get actual dive data with Risa Deep →| Sighting | Seafloor | Sea temp | Deepest dive (modelled) |
|---|---|---|---|
| May 31, 2026 | 166 m | 8.6°C | 123 m |
| Jun 2, 2026 | 100 m | 8.4°C | 31 m |
| Jul 9, 2026 | 46 m | 12.5°C | 17 m |
| Jul 13, 2026 | 141 m | 13.2°C | 111 m |
| Jul 20, 2026 | 59 m | 13.1°C | 38 m |
| Aug 7, 2026 | 88 m | 13.4°C | 41 m |
| Sep 6, 2026 | 161 m | 13.1°C | 118 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
123 m
Deepest dive
5:49
Longest dive
63
Dives
23 m
Avg dive depth
7
Sightings
97
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 (166 m) and the published dive-behaviour distribution. Modelled, not measured.
Deep Effort Score
DeepPlace
Where this happened · May 31, 2026
measured- Seafloor depth
- 166 m
- Sea-surface temperature
- 8.6°C
- Distance from shore
- 5.0 km
Across the residency · 7 sightings
measured- Seafloor depth
- 46 m – 166 m
- Sea-surface temperature
- 8.4°C – 13.4°C
- Distance from shore
- 1.0 km – 5.0 km
Sources: GEBCO seafloor grid · NASA JPL MUR sea temperature · PacIOOS coastline distance
Source records
This activity is assembled from 7 catalogued encounters on Happywhale.