Chromosome – Residency
25th sighting in Gulf of Maine
Chromosome @11155
Jun 30 – Sep 21, 2025 · Gulf of Maine
Gulf of Maine · Jun – Sep 2025
133 m
Deepest dive
6:07
Longest dive
80
Dives
- Sightings
- 9
- Days between first and last sighting
- 82
- Deepest dive on record
- 133 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 30, 2025 | 98 m | — | 65 m |
| Jul 7, 2025 | 57 m | — | 26 m |
| Jul 26, 2025 | 62 m | — | 50 m |
| Aug 11, 2025 | 28 m | — | 20 m |
| Aug 16, 2025 | 146 m | — | 133 m |
| Aug 16, 2025 | 99 m | — | 68 m |
| Aug 23, 2025 | 137 m | — | 29 m |
| Sep 20, 2025 | 61 m | — | 43 m |
| Sep 21, 2025 | 86 m | — | 15 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
133 m
Deepest dive
6:07
Longest dive
80
Dives
20 m
Avg dive depth
9
Sightings
82
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 (146 m) and the published dive-behaviour distribution. Modelled, not measured.
Deep Effort Score
DeepPlace
Where this happened · Aug 16, 2025
measured- Seafloor depth
- 146 m
- Sea-surface temperature
- —
- Distance from shore
- 52.0 km
Across the residency · 9 sightings
measured- Seafloor depth
- 28 m – 146 m
- Sea-surface temperature
- —
- Distance from shore
- 12.0 km – 52.0 km
Sources: GEBCO seafloor grid · PacIOOS coastline distance
Source records
This activity is assembled from 9 catalogued encounters on Happywhale.