Telson – Residency
13th sighting in Salish Sea
Telson @104371
Jul 19 – Sep 19, 2026 · Salish Sea
Green Water Company
Cliffs echoing my breath, another back always surfacing nearby.
142 m
Deepest dive
4:49
Longest dive
51
Dives
- Sightings
- 4
- Days between first and last sighting
- 62
- Deepest dive on record
- 142 m · this residency
Dive stats modelled within real depth limits — not measured
Get actual dive data with Risa Deep →| Sighting | Seafloor | Sea temp | Deepest dive (modelled) |
|---|---|---|---|
| Jul 19, 2026 | 57 m | 15.1°C | 47 m |
| Aug 3, 2026 | 157 m | 15.1°C | 142 m |
| Aug 4, 2026 | 116 m | 15.2°C | 36 m |
| Sep 19, 2026 | 111 m | — | 98 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
142 m
Deepest dive
4:49
Longest dive
51
Dives
26 m
Avg dive depth
4
Sightings
62
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 (157 m) and the published dive-behaviour distribution. Modelled, not measured.
Deep Effort Score
DeepPlace
Where this happened · Aug 3, 2026
measured- Seafloor depth
- 157 m
- Sea-surface temperature
- 15.1°C
- Distance from shore
- 4.0 km
Across the residency · 4 sightings
measured- Seafloor depth
- 57 m – 157 m
- Sea-surface temperature
- 15.1°C – 15.2°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 4 catalogued encounters on Happywhale.