BCY0477 – Residency
5th sighting in Au'au Channel
BCY0477 @40303
Jan 27 – Feb 5, 2026 · Au'au Channel
Au'au Channel · Jan – Feb 2026
43 m
Deepest dive
1:45
Longest dive
41
Dives
- Sightings
- 4
- Days between first and last sighting
- 9
- Deepest dive on record
- 43 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) |
|---|---|---|---|
| Jan 27, 2026 | 42 m | 25.5°C | 34 m |
| Jan 28, 2026 | 49 m | 25.6°C | 43 m |
| Feb 5, 2026 | 55 m | 25.4°C | 29 m |
| Feb 5, 2026 | 42 m | 25.4°C | 13 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
43 m
Deepest dive
1:45
Longest dive
41
Dives
15 m
Avg dive depth
4
Sightings
9
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 (49 m) and the published dive-behaviour distribution. Modelled, not measured.
Deep Effort Score
DeepPlace
Where this happened · Jan 28, 2026
measured- Seafloor depth
- 49 m
- Sea-surface temperature
- 25.6°C
- Distance from shore
- 4.0 km
Across the residency · 4 sightings
measured- Seafloor depth
- 42 m – 55 m
- Sea-surface temperature
- 25.4°C – 25.6°C
- Distance from shore
- 2.0 km – 5.0 km
Sources: GEBCO seafloor grid · NOAA OISST sea temperature · PacIOOS coastline distance
Source records
This activity is assembled from 4 catalogued encounters on Happywhale.