Mallard – Residency
13th sighting in Gulf of Maine
Mallard @7687
Jun 26 – Aug 21, 2026 · Gulf of Maine
Gulf of Maine, Again and Always
Herring thick, fog thick, whole summer spent right where the food is.
151 m
Deepest dive
6:56
Longest dive
69
Dives
- Sightings
- 8
- Days between first and last sighting
- 56
- Deepest dive on record
- 151 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 26, 2026 | 200 m | 11.5°C | 151 m |
| Aug 1, 2026 | 95 m | 14.5°C | 54 m |
| Aug 5, 2026 | 59 m | 14.5°C | 49 m |
| Aug 7, 2026 | 107 m | 15.0°C | 94 m |
| Aug 9, 2026 | 25 m | 17.8°C | 22 m |
| Aug 12, 2026 | -6 m | 17.1°C | — |
| Aug 13, 2026 | 97 m | 14.8°C | 54 m |
| Aug 21, 2026 | 80 m | 15.3°C | 72 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
151 m
Deepest dive
6:56
Longest dive
69
Dives
28 m
Avg dive depth
8
Sightings
56
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 (200 m) and the published dive-behaviour distribution. Modelled, not measured.
Deep Effort Score
DeepPlace
Where this happened · Jun 26, 2026
measured- Seafloor depth
- 200 m
- Sea-surface temperature
- 11.5°C
- Distance from shore
- 12.0 km
Across the residency · 8 sightings
measured- Seafloor depth
- -6 m – 200 m
- Sea-surface temperature
- 11.5°C – 17.8°C
- Distance from shore
- 2.0 km – 12.0 km
Sources: GEBCO seafloor grid · NASA JPL MUR sea temperature · PacIOOS coastline distance
Source records
This activity is assembled from 8 catalogued encounters on Happywhale.