2025 Delta – Residency
7th sighting in South Africa
2025 Delta @142346
Aug 6 – 19, 2025 · South Africa
South Africa · Aug 2025
24 m
Deepest dive
1:36
Longest dive
79
Dives
- Sightings
- 7
- Days between first and last sighting
- 13
- Deepest dive on record
- 24 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) |
|---|---|---|---|
| Aug 6, 2025 | 24 m | — | 21 m |
| Aug 7, 2025 | 22 m | — | 18 m |
| Aug 7, 2025 | 24 m | — | 21 m |
| Aug 12, 2025 | 20 m | — | 13 m |
| Aug 15, 2025 | 20 m | — | 17 m |
| Aug 17, 2025 | 24 m | — | 17 m |
| Aug 19, 2025 | 29 m | — | 24 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
24 m
Deepest dive
1:36
Longest dive
79
Dives
11 m
Avg dive depth
7
Sightings
13
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 (29 m) and the published dive-behaviour distribution. Modelled, not measured.
Deep Effort Score
DeepPlace
Where this happened · Aug 19, 2025
measured- Seafloor depth
- 29 m
- Sea-surface temperature
- —
- Distance from shore
- 9.0 km
Across the residency · 7 sightings
measured- Seafloor depth
- 20 m – 29 m
- Sea-surface temperature
- —
- Distance from shore
- 9.0 km
Sources: GEBCO seafloor grid · PacIOOS coastline distance
Source records
This activity is assembled from 7 catalogued encounters on Happywhale.