Twyla – Residency
72nd sighting in Chatham Strait
Twyla @6414
Jun 21 – Aug 24, 2025 · Chatham Strait
Chatham Strait · Jun – Aug 2025
68 m
Deepest dive
2:25
Longest dive
84
Dives
- Sightings
- 7
- Days between first and last sighting
- 64
Dive stats modelled within real depth limits — not measured
Get actual dive data with Risa Deep →| Sighting | Seafloor | Sea temp | Deepest dive (modelled) |
|---|---|---|---|
| Jun 21, 2025 | 27 m | 11.7°C | 22 m |
| Jun 29, 2025 | 94 m | 12.3°C | 68 m |
| Jul 25, 2025 | 76 m | 12.8°C | 57 m |
| Aug 1, 2025 | 22 m | 14.1°C | 18 m |
| Aug 4, 2025 | 21 m | 13.4°C | 18 m |
| Aug 23, 2025 | 33 m | 14.3°C | 21 m |
| Aug 24, 2025 | 86 m | 15.1°C | 55 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
68 m
Deepest dive
2:25
Longest dive
84
Dives
17 m
Avg dive depth
7
Sightings
64
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 (94 m) and the published dive-behaviour distribution. Modelled, not measured.
Deep Effort Score
DeepPlace
Where this happened · Jun 29, 2025
measured- Seafloor depth
- 94 m
- Sea-surface temperature
- 12.3°C
- Distance from shore
- 4.0 km
Across the residency · 7 sightings
measured- Seafloor depth
- 21 m – 94 m
- Sea-surface temperature
- 11.7°C – 15.1°C
- Distance from shore
- 2.0 km – 5.0 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.