Highlighter – Residency
21st sighting in Gulf of Maine
Highlighter @15295
Jul 21 – Aug 18, 2026 · Gulf of Maine
Full Month on the Banks
Herring stacked thick, whales everywhere, my fluke doing what it's always done here.
87 m
Deepest dive
5:20
Longest dive
105
Dives
- Sightings
- 7
- Days between first and last sighting
- 28
Dive stats modelled within real depth limits — not measured
Get actual dive data with Risa Deep →| Sighting | Seafloor | Sea temp | Deepest dive (modelled) |
|---|---|---|---|
| Jul 21, 2026 | 172 m | 12.6°C | 87 m |
| Aug 1, 2026 | 95 m | 14.5°C | 36 m |
| Aug 9, 2026 | 25 m | 17.8°C | 21 m |
| Aug 10, 2026 | 45 m | 18.2°C | 41 m |
| Aug 15, 2026 | 48 m | 15.1°C | 32 m |
| Aug 16, 2026 | 52 m | 13.4°C | 46 m |
| Aug 18, 2026 | 106 m | 12.2°C | 54 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
87 m
Deepest dive
5:20
Longest dive
105
Dives
20 m
Avg dive depth
7
Sightings
28
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 (172 m) and the published dive-behaviour distribution. Modelled, not measured.
Deep Effort Score
DeepPlace
Where this happened · Jul 21, 2026
measured- Seafloor depth
- 172 m
- Sea-surface temperature
- 12.6°C
- Distance from shore
- 9.0 km
Across the residency · 7 sightings
measured- Seafloor depth
- 25 m – 172 m
- Sea-surface temperature
- 12.2°C – 18.2°C
- Distance from shore
- 2.0 km – 38.0 km
Sources: GEBCO seafloor grid · NASA JPL MUR sea temperature · PacIOOS coastline distance
Source records
This activity is assembled from 7 catalogued encounters on Happywhale.