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

Sherwina – Residency

4th sighting in Salish Sea
Fluke of Sherwina
Sherwina Confirmed in the catalog @11390
Oct 3, 2019 – Jan 2, 2020 · Salish Sea

Salish Sea · Oct 2019 – Jan 2020

126 m
Deepest dive
4:01
Longest dive
42
Dives
Sightings
4
Days between first and last sighting
91

Dive stats modelled within real depth limits — not measured

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SightingSeafloorSea tempDeepest dive (modelled)
Oct 3, 2019111 m10.5°C91 m
Oct 12, 2019140 m11.6°C126 m
Oct 28, 201945 m10.2°C22 m
Jan 2, 2020102 m8.1°C62 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
Oct 3, 2019 — seafloor 111 m (measured), deepest dive 91 m (modelled)Oct 3Oct 12, 2019 — seafloor 140 m (measured), deepest dive 126 m (modelled)Oct 12Oct 28, 2019 — seafloor 45 m (measured), deepest dive 22 m (modelled)Oct 28Jan 2, 2020 — seafloor 102 m (measured), deepest dive 62 m (modelled)Jan 2

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

Dives

126 m
Deepest dive
4:01
Longest dive
42
Dives
22 m
Avg dive depth
4
Sightings
91
Days first → last

Dive metrics are modelled within real depth limits — not measured

Get actual dive data with Risa Deep →

Dive profile

modelled
075150126 mstartdive sequence (illustrative)

Depth shaped by the seafloor limit here (140 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 · Oct 12, 2019

measured
Seafloor depth
140 m
Sea-surface temperature
11.6°C
Distance from shore
2.0 km

Across the residency · 4 sightings

measured
Seafloor depth
45 m – 140 m
Sea-surface temperature
8.1°C – 11.6°C
Distance from shore
2.0 km – 9.0 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 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.