Pierce – Residency
17th sighting in Gulf of Maine
Pierce @29660
Jul 18 – Sep 28, 2025 · Gulf of Maine
Gulf of Maine · Jul – Sep 2025
86 m
Deepest dive
3:40
Longest dive
154
Dives
- Sightings
- 14
- Days between first and last sighting
- 72
Dive stats modelled within real depth limits — not measured
Get actual dive data with Risa Deep →| Sighting | Seafloor | Sea temp | Deepest dive (modelled) |
|---|---|---|---|
| Jul 18, 2025 | 96 m | — | 11 m |
| Jul 19, 2025 | 104 m | — | 80 m |
| Jul 23, 2025 | 37 m | — | 16 m |
| Aug 2, 2025 | 111 m | — | 85 m |
| Aug 9, 2025 | 61 m | — | 24 m |
| Aug 10, 2025 | 35 m | — | 31 m |
| Aug 14, 2025 | 35 m | — | 30 m |
| Aug 15, 2025 | 45 m | — | 29 m |
| Aug 15, 2025 | 177 m | — | 86 m |
| Aug 31, 2025 | 3 m | — | 2 m |
| Sep 4, 2025 | 146 m | — | 69 m |
| Sep 9, 2025 | 146 m | — | 78 m |
| Sep 9, 2025 | 22 m | — | 12 m |
| Sep 28, 2025 | 48 m | — | 31 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
86 m
Deepest dive
3:40
Longest dive
154
Dives
19 m
Avg dive depth
14
Sightings
72
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 (177 m) and the published dive-behaviour distribution. Modelled, not measured.
Deep Effort Score
DeepPlace
Where this happened · Aug 15, 2025
measured- Seafloor depth
- 177 m
- Sea-surface temperature
- —
- Distance from shore
- 22.0 km
Across the residency · 14 sightings
measured- Seafloor depth
- 3 m – 177 m
- Sea-surface temperature
- —
- Distance from shore
- 1.0 km – 35.0 km
Sources: GEBCO seafloor grid · PacIOOS coastline distance
Source records
This activity is assembled from 14 catalogued encounters on Happywhale.