SEAK-1878 – Residency
11th sighting in Au'au Channel
SEAK-1878 @17978
Dec 15, 2025 – Feb 12, 2026 · Au'au Channel
Au'au Channel · Dec 2025 – Feb 2026
49 m
Deepest dive
2:30
Longest dive
19
Dives
- Sightings
- 2
- Days between first and last sighting
- 59
Dive stats modelled within real depth limits — not measured
Get actual dive data with Risa Deep →| Sighting | Seafloor | Sea temp | Deepest dive (modelled) |
|---|---|---|---|
| Dec 15, 2025 | 94 m | 26.3°C | 49 m |
| Feb 12, 2026 | 31 m | 25.0°C | 23 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
49 m
Deepest dive
2:30
Longest dive
19
Dives
20 m
Avg dive depth
2
Sightings
59
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 (94 m) and the published dive-behaviour distribution. Modelled, not measured.
Deep Effort Score
DeepPlace
Where this happened · Dec 15, 2025
measured- Seafloor depth
- 94 m
- Sea-surface temperature
- 26.3°C
- Distance from shore
- 6.0 km
Across the residency · 2 sightings
measured- Seafloor depth
- 31 m – 94 m
- Sea-surface temperature
- 25.0°C – 26.3°C
- Distance from shore
- 2.0 km – 6.0 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.