Sierra 2024 – Residency
6th sighting in South Africa
Sierra 2024 @125643
Dec 28, 2024 – Jan 24, 2025 · South Africa
South Africa · Dec 2024 – Jan 2025
67 m
Deepest dive
2:49
Longest dive
56
Dives
- Sightings
- 3
- Days between first and last sighting
- 27
- Deepest dive on record
- 67 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 28, 2024 | 52 m | — | 47 m |
| Jan 5, 2025 | 43 m | — | 37 m |
| Jan 24, 2025 | 86 m | — | 67 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
67 m
Deepest dive
2:49
Longest dive
56
Dives
21 m
Avg dive depth
3
Sightings
27
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 (86 m) and the published dive-behaviour distribution. Modelled, not measured.
Deep Effort Score
DeepPlace
Where this happened · Jan 24, 2025
measured- Seafloor depth
- 86 m
- Sea-surface temperature
- —
- Distance from shore
- 10.0 km
Across the residency · 3 sightings
measured- Seafloor depth
- 43 m – 86 m
- Sea-surface temperature
- —
- Distance from shore
- 3.0 km – 10.0 km
Sources: GEBCO seafloor grid · PacIOOS coastline distance
Source records
This activity is assembled from 3 catalogued encounters on Happywhale.