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Salish Sea

2025 calf of Big Mama – Residency

23rd sighting in Salish Sea
Fluke of 2025 calf of Big Mama
2025 calf of Big Mama Confirmed in the catalog @139746
Jun 12 – Jul 17, 2026 · Salish Sea

Herring Line, My Way

Cracked this channel solo and the herring bunched up right on cue.

170 m
Deepest dive
5:09
Longest dive
107
Dives
Sightings
8
Days between first and last sighting
35
Deepest dive on record
170 m · this residency

Dive stats modelled within real depth limits — not measured

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SightingSeafloorSea tempDeepest dive (modelled)
Jun 12, 2026198 m12.8°C170 m
Jun 17, 2026147 m15.7°C24 m
Jun 19, 2026140 m15.8°C101 m
Jul 2, 2026103 m13.1°C62 m
Jul 5, 2026132 m16.1°C114 m
Jul 11, 2026173 m13.8°C39 m
Jul 16, 2026155 m14.8°C30 m
Jul 17, 202684 m15.0°C76 m

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
Jun 12, 2026 — seafloor 198 m (measured), deepest dive 170 m (modelled)Jun 12Jun 17, 2026 — seafloor 147 m (measured), deepest dive 24 m (modelled)Jun 17Jun 19, 2026 — seafloor 140 m (measured), deepest dive 101 m (modelled)Jun 19Jul 2, 2026 — seafloor 103 m (measured), deepest dive 62 m (modelled)Jul 2Jul 5, 2026 — seafloor 132 m (measured), deepest dive 114 m (modelled)Jul 5Jul 11, 2026 — seafloor 173 m (measured), deepest dive 39 m (modelled)Jul 11Jul 16, 2026 — seafloor 155 m (measured), deepest dive 30 m (modelled)Jul 16Jul 17, 2026 — seafloor 84 m (measured), deepest dive 76 m (modelled)Jul 17

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

Dives

170 m
Deepest dive
5:09
Longest dive
107
Dives
26 m
Avg dive depth
8
Sightings
35
Days first → last

Dive metrics are modelled within real depth limits — not measured

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Dive profile

modelled
0100200170 mstartdive sequence (illustrative)

Depth shaped by the seafloor limit here (198 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 · Jun 12, 2026

measured
Seafloor depth
198 m
Sea-surface temperature
12.8°C
Distance from shore
2.0 km

Across the residency · 8 sightings

measured
Seafloor depth
84 m – 198 m
Sea-surface temperature
12.8°C – 16.1°C
Distance from shore
1.0 km – 13.0 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 8 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.