Twyla – Residency
20th sighting in Chatham Strait
Twyla @6414
Apr 30 – Jul 21, 2018 · Chatham Strait
Chatham Strait · Apr – Jul 2018
99 m
Deepest dive
3:15
Longest dive
71
Dives
- Sightings
- 7
- Days between first and last sighting
- 82
Dive stats modelled within real depth limits — not measured
Get actual dive data with Risa Deep →| Sighting | Seafloor | Sea temp | Deepest dive (modelled) |
|---|---|---|---|
| Apr 30, 2018 | 224 m | 5.7°C | 99 m |
| May 3, 2018 | 194 m | 6.0°C | 41 m |
| Jul 4, 2018 | 88 m | 10.4°C | 57 m |
| Jul 13, 2018 | 46 m | 11.4°C | 41 m |
| Jul 15, 2018 | 63 m | 11.2°C | 56 m |
| Jul 16, 2018 | 80 m | 11.4°C | 40 m |
| Jul 21, 2018 | 74 m | 11.0°C | 60 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
99 m
Deepest dive
3:15
Longest dive
71
Dives
22 m
Avg dive depth
7
Sightings
82
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 (224 m) and the published dive-behaviour distribution. Modelled, not measured.
Deep Effort Score
DeepPlace
Where this happened · Apr 30, 2018
measured- Seafloor depth
- 224 m
- Sea-surface temperature
- 5.7°C
- Distance from shore
- 2.0 km
Across the residency · 7 sightings
measured- Seafloor depth
- 46 m – 224 m
- Sea-surface temperature
- 5.7°C – 11.4°C
- Distance from shore
- 1.0 km – 2.0 km
Sources: GEBCO seafloor grid · NASA JPL MUR sea temperature · PacIOOS coastline distance
Source records
This activity is assembled from 7 catalogued encounters on Happywhale.