BCX0421 – Residency
1st sighting in Hawaiian Islands
BCX0421 @75247
Jan 30, 2026 · Hawaiian Islands
Hawaiian Islands · Jan 2026
58 m
Deepest dive
1:57
Longest dive
8
Dives
- Sightings
- 1
- Days between first and last sighting
- Same day
- Deepest dive on record
- 58 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 30, 2026 | 63 m | 25.8°C | 58 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
58 m
Deepest dive
1:57
Longest dive
8
Dives
27 m
Avg dive depth
1
Sightings
Same day
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 (63 m) and the published dive-behaviour distribution. Modelled, not measured.
Deep Effort Score
DeepPlace
Where this happened · Jan 30, 2026
measured- Seafloor depth
- 63 m
- Sea-surface temperature
- 25.8°C
- Distance from shore
- —
Sources: GEBCO seafloor grid · NOAA OISST sea temperature · PacIOOS coastline distance
Source records
This activity is assembled from 1 catalogued encounter on Happywhale.