Tornado – Residency
38th sighting in Monterey Bay
Tornado @41687
Dec 7 – 20, 2025 · Monterey Bay
Monterey Bay · Dec 2025
88 m
Deepest dive
3:06
Longest dive
40
Dives
- Sightings
- 5
- Days between first and last sighting
- 13
Dive stats modelled within real depth limits — not measured
Get actual dive data with Risa Deep →| Sighting | Seafloor | Sea temp | Deepest dive (modelled) |
|---|---|---|---|
| Dec 7, 2025 | 91 m | 14.4°C | 45 m |
| Dec 14, 2025 | 143 m | 14.7°C | 78 m |
| Dec 19, 2025 | 75 m | 14.7°C | 51 m |
| Dec 20, 2025 | 538 m | 14.5°C | 24 m |
| Dec 20, 2025 | 567 m | 14.6°C | 88 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
88 m
Deepest dive
3:06
Longest dive
40
Dives
21 m
Avg dive depth
5
Sightings
13
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 (567 m) and the published dive-behaviour distribution. Modelled, not measured.
Deep Effort Score
DeepPlace
Where this happened · Dec 20, 2025
measured- Seafloor depth
- 567 m
- Sea-surface temperature
- 14.6°C
- Distance from shore
- 16.0 km
Across the residency · 5 sightings
measured- Seafloor depth
- 75 m – 567 m
- Sea-surface temperature
- 14.4°C – 14.7°C
- Distance from shore
- 3.0 km – 16.0 km
Sources: GEBCO seafloor grid · NASA JPL MUR sea temperature · PacIOOS coastline distance
Source records
This activity is assembled from 5 catalogued encounters on Happywhale.