Chromosome – Residency
29th sighting in Gulf of Maine
Chromosome @11155
Aug 8 – Sep 11, 2026 · Gulf of Maine
August, Like Clockwork
The light gets long, the water turns green, and there I am.
67 m
Deepest dive
3:06
Longest dive
44
Dives
- Sightings
- 4
- Days between first and last sighting
- 34
Dive stats modelled within real depth limits — not measured
Get actual dive data with Risa Deep →| Sighting | Seafloor | Sea temp | Deepest dive (modelled) |
|---|---|---|---|
| Aug 8, 2026 | 77 m | 20.4°C | 59 m |
| Aug 9, 2026 | 90 m | 21.1°C | 67 m |
| Aug 20, 2026 | 40 m | 20.7°C | 35 m |
| Sep 11, 2026 | 98 m | — | 19 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
67 m
Deepest dive
3:06
Longest dive
44
Dives
23 m
Avg dive depth
4
Sightings
34
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 (90 m) and the published dive-behaviour distribution. Modelled, not measured.
Deep Effort Score
DeepPlace
Where this happened · Aug 9, 2026
measured- Seafloor depth
- 90 m
- Sea-surface temperature
- 21.1°C
- Distance from shore
- 22.0 km
Across the residency · 4 sightings
measured- Seafloor depth
- 40 m – 98 m
- Sea-surface temperature
- 20.4°C – 21.1°C
- Distance from shore
- 17.0 km – 29.0 km
Sources: GEBCO seafloor grid · NASA JPL MUR sea temperature · PacIOOS coastline distance
Source records
This activity is assembled from 4 catalogued encounters on Happywhale.