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

Cassiopeia – Residency

12th sighting in Salish Sea
Fluke of Cassiopeia
Cassiopeia Confirmed in the catalog @11002
Jun 4 – Sep 29, 2023 · Salish Sea

Salish Sea · Jun – Sep 2023

94 m
Deepest dive
3:10
Longest dive
51
Dives
Sightings
5
Days between first and last sighting
117

Dive stats modelled within real depth limits — not measured

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SightingSeafloorSea tempDeepest dive (modelled)
Jun 4, 202315 m—11 m
Jun 22, 202331 m—28 m
Aug 18, 2023713 m—94 m
Sep 22, 2023180 m—62 m
Sep 29, 2023175 m—42 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 4, 2023 — seafloor 15 m (measured), deepest dive 11 m (modelled)Jun 4Jun 22, 2023 — seafloor 31 m (measured), deepest dive 28 m (modelled)Jun 22Aug 18, 2023 — seafloor 713 m (measured), deepest dive 94 m (modelled)Aug 18Sep 22, 2023 — seafloor 180 m (measured), deepest dive 62 m (modelled)Sep 22Sep 29, 2023 — seafloor 175 m (measured), deepest dive 42 m (modelled)Sep 29

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

Dives

94 m
Deepest dive
3:10
Longest dive
51
Dives
19 m
Avg dive depth
5
Sightings
117
Days first → last

Dive metrics are modelled within real depth limits — not measured

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Dive profile

modelled
05010094 mstartdive sequence (illustrative)

Depth shaped by the seafloor limit here (713 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 · Aug 18, 2023

measured
Seafloor depth
713 m
Sea-surface temperature
—
Distance from shore
1.0 km

Across the residency · 5 sightings

measured
Seafloor depth
15 m – 713 m
Sea-surface temperature
—
Distance from shore
1.0 km

Sources: GEBCO seafloor grid · PacIOOS coastline distance

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

Source records

This activity is assembled from 5 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.