Helix – Residency
4th sighting in Lynn Canal & Stephens Passage
Helix @83824
Jun 22 – Nov 2, 2021 · Lynn Canal & Stephens Passage
Lynn Canal & Stephens Passage · Jun – Nov 2021
71 m
Deepest dive
2:54
Longest dive
69
Dives
- Sightings
- 6
- Days between first and last sighting
- 133
Dive stats modelled within real depth limits — not measured
Get actual dive data with Risa Deep →| Sighting | Seafloor | Sea temp | Deepest dive (modelled) |
|---|---|---|---|
| Jun 22, 2021 | 72 m | 10.5°C | 59 m |
| Jul 31, 2021 | 122 m | 14.7°C | 45 m |
| Aug 19, 2021 | 108 m | 12.8°C | 71 m |
| Aug 29, 2021 | 105 m | 11.9°C | 65 m |
| Aug 31, 2021 | 77 m | 11.3°C | 57 m |
| Nov 2, 2021 | 68 m | 6.5°C | 26 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
71 m
Deepest dive
2:54
Longest dive
69
Dives
23 m
Avg dive depth
6
Sightings
133
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 (108 m) and the published dive-behaviour distribution. Modelled, not measured.
Deep Effort Score
DeepPlace
Where this happened · Aug 19, 2021
measured- Seafloor depth
- 108 m
- Sea-surface temperature
- 12.8°C
- Distance from shore
- 1.0 km
Across the residency · 6 sightings
measured- Seafloor depth
- 68 m – 122 m
- Sea-surface temperature
- 6.5°C – 14.7°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 6 catalogued encounters on Happywhale.