HW-MN0805823 – Residency
5th sighting in South Africa
HW-MN0805823 @150470
Dec 30, 2025 – Jan 14, 2026 · South Africa
South Africa · Dec 2025 – Jan 2026
50 m
Deepest dive
2:16
Longest dive
47
Dives
- Sightings
- 5
- Days between first and last sighting
- 15
- Deepest dive on record
- 50 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 | 65 m | — | 24 m |
| Dec 30, 2025 | 26 m | — | 22 m |
| Jan 5, 2026 | 83 m | 15.0°C | 50 m |
| Jan 11, 2026 | 71 m | 15.2°C | 47 m |
| Jan 14, 2026 | 37 m | 15.7°C | 33 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
50 m
Deepest dive
2:16
Longest dive
47
Dives
18 m
Avg dive depth
5
Sightings
15
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 (83 m) and the published dive-behaviour distribution. Modelled, not measured.
Deep Effort Score
DeepPlace
Where this happened · Jan 5, 2026
measured- Seafloor depth
- 83 m
- Sea-surface temperature
- 15.0°C
- Distance from shore
- 8.0 km
Across the residency · 5 sightings
measured- Seafloor depth
- 26 m – 83 m
- Sea-surface temperature
- 15.0°C – 15.7°C
- Distance from shore
- 5.0 km – 9.0 km
Sources: GEBCO seafloor grid · NOAA OISST sea temperature · PacIOOS coastline distance
Source records
This activity is assembled from 5 catalogued encounters on Happywhale.