HW-MN0805838 – Residency
4th sighting in South Africa
HW-MN0805838 @150511
Dec 30, 2025 – Jan 29, 2026 · South Africa
South Africa · Dec 2025 – Jan 2026
57 m
Deepest dive
2:32
Longest dive
55
Dives
- Sightings
- 4
- Days between first and last sighting
- 30
- Deepest dive on record
- 57 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) |
|---|---|---|---|
| Dec 30, 2025 | 82 m | — | 24 m |
| Jan 5, 2026 | 61 m | 14.4°C | 55 m |
| Jan 6, 2026 | 60 m | 14.8°C | 32 m |
| Jan 29, 2026 | 64 m | 14.7°C | 57 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
57 m
Deepest dive
2:32
Longest dive
55
Dives
21 m
Avg dive depth
4
Sightings
30
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 (64 m) and the published dive-behaviour distribution. Modelled, not measured.
Deep Effort Score
DeepPlace
Where this happened · Jan 29, 2026
measured- Seafloor depth
- 64 m
- Sea-surface temperature
- 14.7°C
- Distance from shore
- 9.0 km
Across the residency · 4 sightings
measured- Seafloor depth
- 60 m – 82 m
- Sea-surface temperature
- 14.4°C – 14.8°C
- Distance from shore
- 4.0 km – 9.0 km
Sources: GEBCO seafloor grid · NOAA OISST sea temperature · PacIOOS coastline distance
Source records
This activity is assembled from 4 catalogued encounters on Happywhale.