Pierce – Residency
21st sighting in Gulf of Maine
Pierce @29660
Jun 24 – Sep 1, 2026 · Gulf of Maine
This Bay, Every Summer
Whole summer parked in the best patch of shelf water going.
66 m
Deepest dive
1:52
Longest dive
56
Dives
- Sightings
- 8
- Days between first and last sighting
- 69
Dive stats modelled within real depth limits — not measured
Get actual dive data with Risa Deep →| Sighting | Seafloor | Sea temp | Deepest dive (modelled) |
|---|---|---|---|
| Jun 24, 2026 | 51 m | 9.9°C | 13 m |
| Jul 12, 2026 | 52 m | 14.4°C | 42 m |
| Aug 6, 2026 | 15 m | 14.7°C | 11 m |
| Aug 7, 2026 | 107 m | 15.0°C | 36 m |
| Aug 12, 2026 | 34 m | 16.7°C | 27 m |
| Aug 21, 2026 | 78 m | 15.8°C | 66 m |
| Aug 22, 2026 | 39 m | 16.4°C | 34 m |
| Sep 1, 2026 | 17 m | 14.3°C | 11 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
66 m
Deepest dive
1:52
Longest dive
56
Dives
16 m
Avg dive depth
8
Sightings
69
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 (78 m) and the published dive-behaviour distribution. Modelled, not measured.
Deep Effort Score
DeepPlace
Where this happened · Aug 21, 2026
measured- Seafloor depth
- 78 m
- Sea-surface temperature
- 15.8°C
- Distance from shore
- 2.0 km
Across the residency · 8 sightings
measured- Seafloor depth
- 15 m – 107 m
- Sea-surface temperature
- 9.9°C – 16.7°C
- Distance from shore
- 1.0 km – 9.0 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.