Niagara – Residency
29th sighting in Salish Sea
Niagara @6489
May 20, 2025 · Salish Sea
Back to Familiar Waters
The old feeding grounds call to me again, rich and welcoming as ever.
144 m
Deepest dive
4:12
Longest dive
24
Dives
- Sightings
- 3
- Days between first and last sighting
- Same day
Dive stats modelled within real depth limits — not measured
Get actual dive data with Risa Deep →| Sighting | Seafloor | Sea temp | Deepest dive (modelled) |
|---|---|---|---|
| May 20, 2025 | 171 m | 9.5°C | 144 m |
| May 20, 2025 | 115 m | 9.4°C | 25 m |
| May 20, 2025 | 134 m | 9.4°C | 94 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
144 m
Deepest dive
4:12
Longest dive
24
Dives
26 m
Avg dive depth
3
Sightings
Same day
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 (171 m) and the published dive-behaviour distribution. Modelled, not measured.
Deep Effort Score
DeepPlace
Where this happened · May 20, 2025
measured- Seafloor depth
- 171 m
- Sea-surface temperature
- 9.5°C
- Distance from shore
- 6.0 km
Across the residency · 3 sightings
measured- Seafloor depth
- 115 m – 171 m
- Sea-surface temperature
- 9.4°C – 9.5°C
- Distance from shore
- 3.0 km – 6.0 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.