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

HW-MN1308718 – Residency

3rd sighting in Antarctic Peninsula
Fluke of HW-MN1308718
HW-MN1308718 Confirmed in the catalog @152728
Dec 18, 2025 – Feb 23, 2026 · Antarctic Peninsula

Antarctic Peninsula · Dec 2025 – Feb 2026

94 m
Deepest dive
3:38
Longest dive
17
Dives
Sightings
3
Days between first and last sighting
67
Deepest dive on record
94 m · this residency

Dive stats modelled within real depth limits — not measured

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SightingSeafloorSea tempDeepest dive (modelled)
Dec 18, 2025272 m—31 m
Jan 25, 2026872 m2.6°C51 m
Feb 23, 2026354 m—94 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
Dec 18, 2025 — seafloor 272 m (measured), deepest dive 31 m (modelled)Dec 18Jan 25, 2026 — seafloor 872 m (measured), deepest dive 51 m (modelled)Jan 25Feb 23, 2026 — seafloor 354 m (measured), deepest dive 94 m (modelled)Feb 23

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

Dives

94 m
Deepest dive
3:38
Longest dive
17
Dives
22 m
Avg dive depth
3
Sightings
67
Days first → last

Dive metrics are modelled within real depth limits — not measured

Get actual dive data with Risa Deep →

Dive profile

modelled
05010094 mstartdive sequence (illustrative)

Depth shaped by the seafloor limit here (354 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 · Feb 23, 2026

measured
Seafloor depth
354 m
Sea-surface temperature
—
Distance from shore
2.0 km

Across the residency · 3 sightings

measured
Seafloor depth
272 m – 872 m
Sea-surface temperature
2.6°C
Distance from shore
2.0 km – 8.0 km

Sources: GEBCO seafloor grid · NOAA OISST 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.