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

HW-MN0444693 – Residency

3rd sighting in Chukotka
Fluke of HW-MN0444693
HW-MN0444693 Confirmed in the catalog @114536
Aug 3 – 11, 2025 · Chukotka

Chukotka · Aug 2025

48 m
Deepest dive
1:56
Longest dive
48
Dives
Sightings
3
Days between first and last sighting
8

Dive stats modelled within real depth limits — not measured

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SightingSeafloorSea tempDeepest dive (modelled)
Aug 3, 202555 m—21 m
Aug 10, 202552 m—48 m
Aug 11, 202531 m—21 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 3, 2025 — seafloor 55 m (measured), deepest dive 21 m (modelled)Aug 3Aug 10, 2025 — seafloor 52 m (measured), deepest dive 48 m (modelled)Aug 10Aug 11, 2025 — seafloor 31 m (measured), deepest dive 21 m (modelled)Aug 11

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

Dives

48 m
Deepest dive
1:56
Longest dive
48
Dives
14 m
Avg dive depth
3
Sightings
8
Days first → last

Dive metrics are modelled within real depth limits — not measured

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Dive profile

modelled
0255048 mstartdive sequence (illustrative)

Depth shaped by the seafloor limit here (52 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 10, 2025

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

Across the residency · 3 sightings

measured
Seafloor depth
31 m – 55 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 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.