BCY0391 – Residency
5th sighting in Au'au Channel
BCY0391 @49138
Feb 21 – Mar 27, 2026 · Au'au Channel
Late Winter in the Channel
Shallow water, close shore, another broad back beside mine — good stretch.
71 m
Deepest dive
2:12
Longest dive
51
Dives
- Sightings
- 3
- Days between first and last sighting
- 34
Dive stats modelled within real depth limits — not measured
Get actual dive data with Risa Deep →| Sighting | Seafloor | Sea temp | Deepest dive (modelled) |
|---|---|---|---|
| Feb 21, 2026 | 60 m | 24.5°C | 32 m |
| Mar 27, 2026 | 77 m | 24.4°C | 71 m |
| Mar 27, 2026 | 60 m | 24.4°C | 50 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
71 m
Deepest dive
2:12
Longest dive
51
Dives
18 m
Avg dive depth
3
Sightings
34
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 (77 m) and the published dive-behaviour distribution. Modelled, not measured.
Deep Effort Score
DeepPlace
Where this happened · Mar 27, 2026
measured- Seafloor depth
- 77 m
- Sea-surface temperature
- 24.4°C
- Distance from shore
- 4.0 km
Across the residency · 3 sightings
measured- Seafloor depth
- 60 m – 77 m
- Sea-surface temperature
- 24.4°C – 24.5°C
- Distance from shore
- 3.0 km – 4.0 km
Sources: GEBCO seafloor grid · NOAA OISST sea temperature · PacIOOS coastline distance
Source records
This activity is assembled from 3 catalogued encounters on Happywhale.