Activity map — real sighting points on an OpenStreetMap basemap © OpenStreetMap contributors
Salish Sea

Big Mama – Residency

29th sighting in Salish Sea
Fluke of Big Mama
Big Mama Confirmed in the catalog @2120
Apr 30 – Aug 3, 2016 · Salish Sea

Salish Sea · Apr – Aug 2016

91 m
Deepest dive
3:07
Longest dive
68
Dives
Sightings
6
Days between first and last sighting
95

Dive stats modelled within real depth limits — not measured

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SightingSeafloorSea tempDeepest dive (modelled)
Apr 30, 201681 m10.7°C45 m
May 10, 201668 m9.9°C59 m
Jun 13, 201688 m10.8°C79 m
Jul 6, 2016100 m10.5°C91 m
Jul 23, 2016123 m11.8°C70 m
Aug 3, 2016-6 m12.5°C—

Seafloor and sea temperature measured · ✳ dives modelled

Activity map — real sighting points on an OpenStreetMap basemap © OpenStreetMap contributors

Deepest dive against the seafloor, per sighting

Seafloor · measured Deepest dive · modelled
Apr 30, 2016 — seafloor 81 m (measured), deepest dive 45 m (modelled)Apr 30May 10, 2016 — seafloor 68 m (measured), deepest dive 59 m (modelled)May 10Jun 13, 2016 — seafloor 88 m (measured), deepest dive 79 m (modelled)Jun 13Jul 6, 2016 — seafloor 100 m (measured), deepest dive 91 m (modelled)Jul 6Jul 23, 2016 — seafloor 123 m (measured), deepest dive 70 m (modelled)Jul 23Aug 3, 2016 — seafloor -6 m (measured), deepest dive — (modelled)Aug 3

Depth runs down from the surface. The modelled dive never passes the measured seafloor at that sighting.

Dives

91 m
Deepest dive
3:07
Longest dive
68
Dives
22 m
Avg dive depth
6
Sightings
95
Days first → last

Dive metrics are modelled within real depth limits — not measured

Get actual dive data with Risa Deep →

Dive profile

modelled
05010091 mstartdive sequence (illustrative)

Depth shaped by the seafloor limit here (100 m) and the published dive-behaviour distribution. Modelled, not measured.

Deep Effort Score

Deep

Depth, duration and recovery resolved into a single number for this session.

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Place

Where this happened · Jul 6, 2016

measured
Seafloor depth
100 m
Sea-surface temperature
10.5°C
Distance from shore
4.0 km

Across the residency · 6 sightings

measured
Seafloor depth
-6 m – 123 m
Sea-surface temperature
9.9°C – 12.5°C
Distance from shore
1.0 km – 40.0 km

Sources: GEBCO seafloor grid · NASA JPL MUR sea temperature · PacIOOS coastline distance

Activity map — real sighting points on an OpenStreetMap basemap © OpenStreetMap contributors

Source records

This activity is assembled from 6 catalogued encounters on Happywhale.

Sighting records from Happywhale, published as occurrence data via GBIF. Individual records are licensed CC0 1.0, CC BY 4.0 or CC BY-NC 4.0, depending on the contributor.

The photographs and fluke identifications behind every sighting are the work of the contributing observers — the citizen scientists, naturalists and operators who logged them, each named in the underlying GBIF occurrence record. Every activity links out to its source encounters on Happywhale. Basemaps © OpenStreetMap contributors (ODbL).

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Breach is an independent project. It is not affiliated with, nor endorsed by, Happywhale or GBIF.