Mosaic – Residency
24th sighting in Chatham Strait
Mosaic @5660
May 27 – Aug 24, 2025 · Chatham Strait
Chatham Strait · May – Aug 2025
141 m
Deepest dive
4:16
Longest dive
60
Dives
- Sightings
- 5
- Days between first and last sighting
- 89
Dive stats modelled within real depth limits — not measured
Get actual dive data with Risa Deep →| Sighting | Seafloor | Sea temp | Deepest dive (modelled) |
|---|---|---|---|
| May 27, 2025 | 330 m | 7.9°C | 141 m |
| Jul 7, 2025 | 187 m | 13.0°C | 64 m |
| Jul 14, 2025 | 187 m | 12.7°C | 80 m |
| Jul 18, 2025 | 305 m | 12.0°C | 78 m |
| Aug 24, 2025 | 86 m | 15.1°C | 24 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
141 m
Deepest dive
4:16
Longest dive
60
Dives
31 m
Avg dive depth
5
Sightings
89
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 (330 m) and the published dive-behaviour distribution. Modelled, not measured.
Deep Effort Score
DeepPlace
Where this happened · May 27, 2025
measured- Seafloor depth
- 330 m
- Sea-surface temperature
- 7.9°C
- Distance from shore
- 4.0 km
Across the residency · 5 sightings
measured- Seafloor depth
- 86 m – 330 m
- Sea-surface temperature
- 7.9°C – 15.1°C
- Distance from shore
- 1.0 km – 4.0 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.