HW-MN0805851 – Residency
5th sighting in South Africa
HW-MN0805851 @150526
Dec 31, 2025 – Feb 7, 2026 · South Africa
South Africa · Dec 2025 – Feb 2026
69 m
Deepest dive
2:31
Longest dive
58
Dives
- Sightings
- 5
- Days between first and last sighting
- 38
- Deepest dive on record
- 69 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 31, 2025 | 80 m | 15.1°C | 61 m |
| Jan 28, 2026 | 42 m | 19.0°C | 34 m |
| Jan 31, 2026 | 82 m | 14.8°C | 64 m |
| Feb 7, 2026 | 82 m | 16.8°C | 38 m |
| Feb 7, 2026 | 81 m | 16.8°C | 69 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
69 m
Deepest dive
2:31
Longest dive
58
Dives
21 m
Avg dive depth
5
Sightings
38
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 (81 m) and the published dive-behaviour distribution. Modelled, not measured.
Deep Effort Score
DeepPlace
Where this happened · Feb 7, 2026
measured- Seafloor depth
- 81 m
- Sea-surface temperature
- 16.8°C
- Distance from shore
- 4.0 km
Across the residency · 5 sightings
measured- Seafloor depth
- 42 m – 82 m
- Sea-surface temperature
- 14.8°C – 19.0°C
- Distance from shore
- 3.0 km – 15.0 km
Sources: GEBCO seafloor grid · NOAA OISST sea temperature · PacIOOS coastline distance
Source records
This activity is assembled from 5 catalogued encounters on Happywhale.