Tunguska – Residency
6th sighting in Gulf of Maine
Tunguska @17020
Jun 19 – 29, 2026 · Gulf of Maine
Gulf of Maine · Jun 2026
22 m
Deepest dive
1:19
Longest dive
29
Dives
- Sightings
- 3
- Days between first and last sighting
- 10
- Deepest dive on record
- 22 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 19, 2026 | 25 m | 16.0°C | 22 m |
| Jun 23, 2026 | 5 m | 19.7°C | 4 m |
| Jun 29, 2026 | 28 m | 17.9°C | 17 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
22 m
Deepest dive
1:19
Longest dive
29
Dives
8 m
Avg dive depth
3
Sightings
10
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 (25 m) and the published dive-behaviour distribution. Modelled, not measured.
Deep Effort Score
DeepPlace
Where this happened · Jun 19, 2026
measured- Seafloor depth
- 25 m
- Sea-surface temperature
- 16.0°C
- Distance from shore
- 16.0 km
Across the residency · 3 sightings
measured- Seafloor depth
- 5 m – 28 m
- Sea-surface temperature
- 16.0°C – 19.7°C
- Distance from shore
- 4.0 km – 25.0 km
Sources: GEBCO seafloor grid · NASA JPL MUR sea temperature · PacIOOS coastline distance
Source records
This activity is assembled from 3 catalogued encounters on Happywhale.