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

GWAK-P402 – Residency

7th sighting in Prince William Sound
Fluke of GWAK-P402
GWAK-P402 Confirmed in the catalog @106618
Jun 26 – Sep 17, 2026 · Prince William Sound

Sound, Mid-Summer, Mine

Drizzle, deep green water, and my usual crew of backs.

143 m
Deepest dive
6:00
Longest dive
19
Dives
Sightings
3
Days between first and last sighting
83
Deepest dive on record
143 m · this residency

Dive stats modelled within real depth limits — not measured

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SightingSeafloorSea tempDeepest dive (modelled)
Jun 26, 2026160 m10.4°C143 m
Jul 26, 202639 m11.6°C29 m
Sep 17, 2026210 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 26, 2026 — seafloor 160 m (measured), deepest dive 143 m (modelled)Jun 26Jul 26, 2026 — seafloor 39 m (measured), deepest dive 29 m (modelled)Jul 26Sep 17, 2026 — seafloor 210 m (measured), deepest dive 42 m (modelled)Sep 17

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

Dives

143 m
Deepest dive
6:00
Longest dive
19
Dives
26 m
Avg dive depth
3
Sightings
83
Days first → last

Dive metrics are modelled within real depth limits — not measured

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Dive profile

modelled
075150143 mstartdive sequence (illustrative)

Depth shaped by the seafloor limit here (160 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 26, 2026

measured
Seafloor depth
160 m
Sea-surface temperature
10.4°C
Distance from shore
2.0 km

Across the residency · 3 sightings

measured
Seafloor depth
39 m – 210 m
Sea-surface temperature
10.4°C – 11.6°C
Distance from shore
2.0 km – 3.0 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 3 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.