Prongs – Residency
14th sighting in Gulf of Maine
Prongs @16940
Jun 27 – Sep 2, 2025 · Gulf of Maine
Gulf of Maine · Jun – Sep 2025
123 m
Deepest dive
3:39
Longest dive
89
Dives
- Sightings
- 9
- Days between first and last sighting
- 67
- Deepest dive on record
- 123 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) |
|---|---|---|---|
| Jun 27, 2025 | 121 m | — | 94 m |
| Aug 15, 2025 | 177 m | — | 63 m |
| Aug 17, 2025 | 50 m | — | 27 m |
| Aug 27, 2025 | 116 m | — | 32 m |
| Aug 31, 2025 | 142 m | — | 123 m |
| Aug 31, 2025 | 107 m | — | 51 m |
| Sep 1, 2025 | 111 m | — | 55 m |
| Sep 2, 2025 | 45 m | — | 38 m |
| Sep 2, 2025 | 141 m | — | 64 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
123 m
Deepest dive
3:39
Longest dive
89
Dives
23 m
Avg dive depth
9
Sightings
67
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 (142 m) and the published dive-behaviour distribution. Modelled, not measured.
Deep Effort Score
DeepPlace
Where this happened · Aug 31, 2025
measured- Seafloor depth
- 142 m
- Sea-surface temperature
- —
- Distance from shore
- 7.0 km
Across the residency · 9 sightings
measured- Seafloor depth
- 45 m – 177 m
- Sea-surface temperature
- —
- Distance from shore
- 5.0 km – 22.0 km
Sources: GEBCO seafloor grid · PacIOOS coastline distance
Source records
This activity is assembled from 9 catalogued encounters on Happywhale.