Cotton – Residency
23rd sighting in Glacier Bay & Icy Strait
Cotton @13320
Jul 4 – Oct 2, 2025 · Glacier Bay & Icy Strait
Glacier Bay & Icy Strait · Jul – Oct 2025
128 m
Deepest dive
4:43
Longest dive
90
Dives
- Sightings
- 9
- Days between first and last sighting
- 90
Dive stats modelled within real depth limits — not measured
Get actual dive data with Risa Deep →| Sighting | Seafloor | Sea temp | Deepest dive (modelled) |
|---|---|---|---|
| Jul 4, 2025 | 43 m | 12.3°C | 35 m |
| Jul 17, 2025 | 86 m | 12.4°C | 73 m |
| Jul 19, 2025 | 83 m | 12.5°C | 69 m |
| Jul 27, 2025 | 273 m | 14.6°C | 64 m |
| Jul 29, 2025 | 212 m | 14.5°C | 74 m |
| Jul 30, 2025 | 245 m | 14.6°C | 128 m |
| Aug 11, 2025 | 246 m | 13.7°C | 97 m |
| Sep 28, 2025 | 187 m | 12.5°C | 43 m |
| Oct 2, 2025 | 73 m | 11.6°C | 42 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
128 m
Deepest dive
4:43
Longest dive
90
Dives
27 m
Avg dive depth
9
Sightings
90
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 (245 m) and the published dive-behaviour distribution. Modelled, not measured.
Deep Effort Score
DeepPlace
Where this happened · Jul 30, 2025
measured- Seafloor depth
- 245 m
- Sea-surface temperature
- 14.6°C
- Distance from shore
- 1.0 km
Across the residency · 9 sightings
measured- Seafloor depth
- 43 m – 273 m
- Sea-surface temperature
- 11.6°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 9 catalogued encounters on Happywhale.