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

Avalanche – Residency

4th sighting in Salish Sea
Fluke of Avalanche
Avalanche Confirmed in the catalog @3585
Aug 17 – 30, 2018 · Salish Sea

Salish Sea · Aug 2018

182 m
Deepest dive
8:29
Longest dive
22
Dives
Sightings
2
Days between first and last sighting
13
Deepest dive on record
182 m · this residency

Dive stats modelled within real depth limits — not measured

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SightingSeafloorSea tempDeepest dive (modelled)
Aug 17, 2018199 m—182 m
Aug 30, 2018197 m—77 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 17, 2018 — seafloor 199 m (measured), deepest dive 182 m (modelled)Aug 17Aug 30, 2018 — seafloor 197 m (measured), deepest dive 77 m (modelled)Aug 30

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

Dives

182 m
Deepest dive
8:29
Longest dive
22
Dives
45 m
Avg dive depth
2
Sightings
13
Days first → last

Dive metrics are modelled within real depth limits — not measured

Get actual dive data with Risa Deep →

Dive profile

modelled
0100200182 mstartdive sequence (illustrative)

Depth shaped by the seafloor limit here (199 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 17, 2018

measured
Seafloor depth
199 m
Sea-surface temperature
—
Distance from shore
5.0 km

Across the residency · 2 sightings

measured
Seafloor depth
197 m – 199 m
Sea-surface temperature
—
Distance from shore
5.0 km – 10.0 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 2 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.