Big Mama – Residency
82nd sighting in Salish Sea
Big Mama @2120
May 18 – Oct 15, 2023 · Salish Sea
Five Month Summer Stay
Found my rhythm in these familiar waters through another long feeding season.
160 m
Deepest dive
5:25
Longest dive
60
Dives
- Sightings
- 7
- Days between first and last sighting
- 150
Dive stats modelled within real depth limits — not measured
Get actual dive data with Risa Deep →| Sighting | Seafloor | Sea temp | Deepest dive (modelled) |
|---|---|---|---|
| May 18, 2023 | 14 m | 12.7°C | 12 m |
| May 19, 2023 | 216 m | 13.0°C | 42 m |
| Jul 9, 2023 | 142 m | 15.6°C | 108 m |
| Jul 18, 2023 | 117 m | 17.6°C | 47 m |
| Aug 7, 2023 | 148 m | 19.6°C | 56 m |
| Aug 11, 2023 | 297 m | 20.1°C | 32 m |
| Oct 15, 2023 | 226 m | 11.0°C | 160 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
160 m
Deepest dive
5:25
Longest dive
60
Dives
21 m
Avg dive depth
7
Sightings
150
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 (226 m) and the published dive-behaviour distribution. Modelled, not measured.
Deep Effort Score
DeepPlace
Where this happened · Oct 15, 2023
measured- Seafloor depth
- 226 m
- Sea-surface temperature
- 11.0°C
- Distance from shore
- 1.0 km
Across the residency · 7 sightings
measured- Seafloor depth
- 14 m – 297 m
- Sea-surface temperature
- 11.0°C – 20.1°C
- Distance from shore
- 1.0 km – 14.0 km
Sources: GEBCO seafloor grid · NASA JPL MUR sea temperature · PacIOOS coastline distance
Source records
This activity is assembled from 7 catalogued encounters on Happywhale.