Dross – Residency
55th sighting in Gulf of Maine
Dross @15615
Jul 25 – Sep 13, 2026 · Gulf of Maine
Sand Lance Never Lie
Those ledges paid off again this whole late-summer stretch.
43 m
Deepest dive
2:31
Longest dive
98
Dives
- Sightings
- 6
- Days between first and last sighting
- 50
Dive stats modelled within real depth limits — not measured
Get actual dive data with Risa Deep →| Sighting | Seafloor | Sea temp | Deepest dive (modelled) |
|---|---|---|---|
| Jul 25, 2026 | 28 m | 18.4°C | 26 m |
| Sep 4, 2026 | 39 m | 19.6°C | 29 m |
| Sep 9, 2026 | 28 m | 19.0°C | 17 m |
| Sep 12, 2026 | 42 m | 19.6°C | 35 m |
| Sep 13, 2026 | 51 m | 18.4°C | 37 m |
| Sep 13, 2026 | 51 m | 18.4°C | 43 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
43 m
Deepest dive
2:31
Longest dive
98
Dives
16 m
Avg dive depth
6
Sightings
50
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 (51 m) and the published dive-behaviour distribution. Modelled, not measured.
Deep Effort Score
DeepPlace
Where this happened · Sep 13, 2026
measured- Seafloor depth
- 51 m
- Sea-surface temperature
- 18.4°C
- Distance from shore
- 8.0 km
Across the residency · 6 sightings
measured- Seafloor depth
- 28 m – 51 m
- Sea-surface temperature
- 18.4°C – 19.6°C
- Distance from shore
- 8.0 km – 25.0 km
Sources: GEBCO seafloor grid · NASA JPL MUR sea temperature · PacIOOS coastline distance
Source records
This activity is assembled from 6 catalogued encounters on Happywhale.