Twyla – Residency
27th sighting in Chatham Strait
Twyla @6414
Jul 25 – Aug 26, 2021 · Chatham Strait
Chatham Strait · Jul – Aug 2021
86 m
Deepest dive
5:20
Longest dive
47
Dives
- Sightings
- 4
- Days between first and last sighting
- 32
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, 2021 | 93 m | 12.2°C | 72 m |
| Jul 28, 2021 | 48 m | 12.7°C | 34 m |
| Jul 29, 2021 | 96 m | 12.8°C | 86 m |
| Aug 26, 2021 | 356 m | 10.6°C | 75 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
86 m
Deepest dive
5:20
Longest dive
47
Dives
20 m
Avg dive depth
4
Sightings
32
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 (96 m) and the published dive-behaviour distribution. Modelled, not measured.
Deep Effort Score
DeepPlace
Where this happened · Jul 29, 2021
measured- Seafloor depth
- 96 m
- Sea-surface temperature
- 12.8°C
- Distance from shore
- 1.0 km
Across the residency · 4 sightings
measured- Seafloor depth
- 48 m – 356 m
- Sea-surface temperature
- 10.6°C – 12.8°C
- Distance from shore
- 1.0 km – 8.0 km
Sources: GEBCO seafloor grid · NASA JPL MUR sea temperature · PacIOOS coastline distance
Source records
This activity is assembled from 4 catalogued encounters on Happywhale.