Scratch – Residency
21st sighting in Chatham Strait
Scratch @5323
May 1 – Jul 31, 2023 · Chatham Strait
Chatham Strait · May – Jul 2023
99 m
Deepest dive
3:16
Longest dive
34
Dives
- Sightings
- 3
- Days between first and last sighting
- 91
Dive stats modelled within real depth limits — not measured
Get actual dive data with Risa Deep →| Sighting | Seafloor | Sea temp | Deepest dive (modelled) |
|---|---|---|---|
| May 1, 2023 | 141 m | 5.9°C | 99 m |
| Jul 21, 2023 | 207 m | 13.9°C | 87 m |
| Jul 31, 2023 | 233 m | 14.6°C | 97 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
3:16
Longest dive
34
Dives
30 m
Avg dive depth
3
Sightings
91
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 (141 m) and the published dive-behaviour distribution. Modelled, not measured.
Deep Effort Score
DeepPlace
Where this happened · May 1, 2023
measured- Seafloor depth
- 141 m
- Sea-surface temperature
- 5.9°C
- Distance from shore
- 1.0 km
Across the residency · 3 sightings
measured- Seafloor depth
- 141 m – 233 m
- Sea-surface temperature
- 5.9°C – 14.6°C
- Distance from shore
- 1.0 km – 3.0 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.