Hasselback – Residency
4th sighting in Gulf of Maine
Hasselback @20048
Jul 15 – Sep 28, 2025 · Gulf of Maine
Gulf of Maine · Jul – Sep 2025
100 m
Deepest dive
3:05
Longest dive
74
Dives
- Sightings
- 5
- Days between first and last sighting
- 75
- Deepest dive on record
- 100 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) |
|---|---|---|---|
| Jul 15, 2025 | 67 m | — | 50 m |
| Jul 15, 2025 | 37 m | — | 34 m |
| Jul 21, 2025 | 124 m | — | 100 m |
| Aug 2, 2025 | 36 m | — | 33 m |
| Sep 28, 2025 | 69 m | — | 53 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
100 m
Deepest dive
3:05
Longest dive
74
Dives
26 m
Avg dive depth
5
Sightings
75
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 (124 m) and the published dive-behaviour distribution. Modelled, not measured.
Deep Effort Score
DeepPlace
Where this happened · Jul 21, 2025
measured- Seafloor depth
- 124 m
- Sea-surface temperature
- —
- Distance from shore
- 43.0 km
Across the residency · 5 sightings
measured- Seafloor depth
- 36 m – 124 m
- Sea-surface temperature
- —
- Distance from shore
- 14.0 km – 52.0 km
Sources: GEBCO seafloor grid · PacIOOS coastline distance
Source records
This activity is assembled from 5 catalogued encounters on Happywhale.