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Antarctic Peninsula

Big Blue – Residency

19th sighting in Antarctic Peninsula
Fluke of Big Blue
Big Blue Confirmed in the catalog @135301
Dec 28, 2025 – Mar 9, 2026 · Antarctic Peninsula

Antarctic Peninsula · Dec 2025 – Mar 2026

113 m
Deepest dive
4:18
Longest dive
128
Dives
Sightings
11
Days between first and last sighting
71

Dive stats modelled within real depth limits — not measured

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SightingSeafloorSea tempDeepest dive (modelled)
Dec 28, 2025258 m—113 m
Jan 12, 202614 m2.5°C9 m
Jan 15, 20267 m2.0°C6 m
Jan 25, 202641 m1.7°C21 m
Feb 1, 202671 m1.7°C44 m
Feb 2, 202612 m2.1°C10 m
Feb 13, 202698 m1.9°C62 m
Feb 15, 20268 m2.1°C7 m
Feb 24, 2026136 m1.9°C88 m
Mar 6, 202696 m2.1°C45 m
Mar 9, 202685 m2.5°C27 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 28, 2025 — seafloor 258 m (measured), deepest dive 113 m (modelled)Dec 28Jan 12, 2026 — seafloor 14 m (measured), deepest dive 9 m (modelled)Jan 12Jan 15, 2026 — seafloor 7 m (measured), deepest dive 6 m (modelled)Jan 15Jan 25, 2026 — seafloor 41 m (measured), deepest dive 21 m (modelled)Jan 25Feb 1, 2026 — seafloor 71 m (measured), deepest dive 44 m (modelled)Feb 1Feb 2, 2026 — seafloor 12 m (measured), deepest dive 10 m (modelled)Feb 2Feb 13, 2026 — seafloor 98 m (measured), deepest dive 62 m (modelled)Feb 13Feb 15, 2026 — seafloor 8 m (measured), deepest dive 7 m (modelled)Feb 15Feb 24, 2026 — seafloor 136 m (measured), deepest dive 88 m (modelled)Feb 24Mar 6, 2026 — seafloor 96 m (measured), deepest dive 45 m (modelled)Mar 6Mar 9, 2026 — seafloor 85 m (measured), deepest dive 27 m (modelled)Mar 9

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

Dives

113 m
Deepest dive
4:18
Longest dive
128
Dives
16 m
Avg dive depth
11
Sightings
71
Days first → last

Dive metrics are modelled within real depth limits — not measured

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Dive profile

modelled
075150113 mstartdive sequence (illustrative)

Depth shaped by the seafloor limit here (258 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 · Dec 28, 2025

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

Across the residency · 11 sightings

measured
Seafloor depth
7 m – 258 m
Sea-surface temperature
1.7°C – 2.5°C
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 11 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.