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

Vulcan – Residency

11th sighting in Salish Sea
Fluke of Vulcan
Vulcan Confirmed in the catalog @13704
Aug 23 – 25, 2020 · Salish Sea

Salish Sea · Aug 2020

128 m
Deepest dive
5:15
Longest dive
51
Dives
Sightings
4
Days between first and last sighting
2
Deepest dive on record
128 m · this residency

Dive stats modelled within real depth limits — not measured

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SightingSeafloorSea tempDeepest dive (modelled)
Aug 23, 2020173 m—72 m
Aug 23, 2020198 m—55 m
Aug 23, 2020196 m—85 m
Aug 25, 2020189 m—128 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
Aug 23, 2020 — seafloor 173 m (measured), deepest dive 72 m (modelled)Aug 23Aug 23, 2020 — seafloor 198 m (measured), deepest dive 55 m (modelled)Aug 23Aug 23, 2020 — seafloor 196 m (measured), deepest dive 85 m (modelled)Aug 23Aug 25, 2020 — seafloor 189 m (measured), deepest dive 128 m (modelled)Aug 25

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

Dives

128 m
Deepest dive
5:15
Longest dive
51
Dives
32 m
Avg dive depth
4
Sightings
2
Days first → last

Dive metrics are modelled within real depth limits — not measured

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Dive profile

modelled
075150128 mstartdive sequence (illustrative)

Depth shaped by the seafloor limit here (189 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 25, 2020

measured
Seafloor depth
189 m
Sea-surface temperature
—
Distance from shore
10.0 km

Across the residency · 4 sightings

measured
Seafloor depth
173 m – 198 m
Sea-surface temperature
—
Distance from shore
7.0 km – 11.0 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 4 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.