Prongs – Residency
19th sighting in Gulf of Maine
Prongs @16940
Jul 6 – Sep 11, 2026 · Gulf of Maine
Silver Water Season
The bait went silver and I barely left the buffet.
78 m
Deepest dive
3:41
Longest dive
115
Dives
- Sightings
- 8
- Days between first and last sighting
- 67
Dive stats modelled within real depth limits — not measured
Get actual dive data with Risa Deep →| Sighting | Seafloor | Sea temp | Deepest dive (modelled) |
|---|---|---|---|
| Jul 6, 2026 | 119 m | 14.0°C | 64 m |
| Jul 17, 2026 | 87 m | 11.8°C | 78 m |
| Aug 5, 2026 | 59 m | 14.5°C | 39 m |
| Aug 7, 2026 | 107 m | 15.0°C | 40 m |
| Aug 12, 2026 | 24 m | 17.0°C | 22 m |
| Aug 13, 2026 | 92 m | 15.1°C | 65 m |
| Sep 7, 2026 | 83 m | 19.3°C | 52 m |
| Sep 11, 2026 | 98 m | — | 28 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
78 m
Deepest dive
3:41
Longest dive
115
Dives
23 m
Avg dive depth
8
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 (87 m) and the published dive-behaviour distribution. Modelled, not measured.
Deep Effort Score
DeepPlace
Where this happened · Jul 17, 2026
measured- Seafloor depth
- 87 m
- Sea-surface temperature
- 11.8°C
- Distance from shore
- 6.0 km
Across the residency · 8 sightings
measured- Seafloor depth
- 24 m – 119 m
- Sea-surface temperature
- 11.8°C – 19.3°C
- Distance from shore
- 2.0 km – 30.0 km
Sources: GEBCO seafloor grid · NASA JPL MUR sea temperature · PacIOOS coastline distance
Source records
This activity is assembled from 8 catalogued encounters on Happywhale.