Ellipsis – Residency
10th sighting in Chatham Strait
Ellipsis @14894
May 21 – Jul 14, 2026 · Chatham Strait
Chatham Strait, herring o'clock
Green water, steep shores, herring thick enough to gulp all day.
90 m
Deepest dive
3:18
Longest dive
45
Dives
- Sightings
- 3
- Days between first and last sighting
- 53
Dive stats modelled within real depth limits — not measured
Get actual dive data with Risa Deep →| Sighting | Seafloor | Sea temp | Deepest dive (modelled) |
|---|---|---|---|
| May 21, 2026 | 100 m | 8.3°C | 90 m |
| May 31, 2026 | 272 m | 8.5°C | 55 m |
| Jul 14, 2026 | 72 m | 13.1°C | 35 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
90 m
Deepest dive
3:18
Longest dive
45
Dives
23 m
Avg dive depth
3
Sightings
53
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 (100 m) and the published dive-behaviour distribution. Modelled, not measured.
Deep Effort Score
DeepPlace
Where this happened · May 21, 2026
measured- Seafloor depth
- 100 m
- Sea-surface temperature
- 8.3°C
- Distance from shore
- 5.0 km
Across the residency · 3 sightings
measured- Seafloor depth
- 72 m – 272 m
- Sea-surface temperature
- 8.3°C – 13.1°C
- Distance from shore
- 1.0 km – 5.0 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.