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

HW-MN0805764 – Residency

8th sighting in South Africa
Fluke of HW-MN0805764
HW-MN0805764 Confirmed in the catalog @150380
Dec 27, 2025 – Jan 8, 2026 · South Africa

South Africa · Dec 2025 – Jan 2026

60 m
Deepest dive
2:51
Longest dive
99
Dives
Sightings
8
Days between first and last sighting
12
Deepest dive on record
60 m · this residency

Dive stats modelled within real depth limits — not measured

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SightingSeafloorSea tempDeepest dive (modelled)
Dec 27, 202562 m—34 m
Dec 28, 202581 m—60 m
Dec 29, 202545 m—33 m
Dec 30, 202546 m—42 m
Jan 2, 202682 m15.6°C26 m
Jan 5, 202682 m14.8°C57 m
Jan 6, 202693 m15.2°C41 m
Jan 8, 202658 m20.4°C48 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 27, 2025 — seafloor 62 m (measured), deepest dive 34 m (modelled)Dec 27Dec 28, 2025 — seafloor 81 m (measured), deepest dive 60 m (modelled)Dec 28Dec 29, 2025 — seafloor 45 m (measured), deepest dive 33 m (modelled)Dec 29Dec 30, 2025 — seafloor 46 m (measured), deepest dive 42 m (modelled)Dec 30Jan 2, 2026 — seafloor 82 m (measured), deepest dive 26 m (modelled)Jan 2Jan 5, 2026 — seafloor 82 m (measured), deepest dive 57 m (modelled)Jan 5Jan 6, 2026 — seafloor 93 m (measured), deepest dive 41 m (modelled)Jan 6Jan 8, 2026 — seafloor 58 m (measured), deepest dive 48 m (modelled)Jan 8

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

Dives

60 m
Deepest dive
2:51
Longest dive
99
Dives
17 m
Avg dive depth
8
Sightings
12
Days first → last

Dive metrics are modelled within real depth limits — not measured

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Dive profile

modelled
05010060 mstartdive sequence (illustrative)

Depth shaped by the seafloor limit here (81 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
81 m
Sea-surface temperature
—
Distance from shore
10.0 km

Across the residency · 8 sightings

measured
Seafloor depth
45 m – 93 m
Sea-surface temperature
14.8°C – 20.4°C
Distance from shore
3.0 km – 12.0 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 8 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.