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South Africa

HW-MN0805643 – Residency

12th sighting in South Africa
Fluke of HW-MN0805643
HW-MN0805643 Confirmed in the catalog @149390
Dec 4, 2025 – Jan 30, 2026 · South Africa

South Africa · Dec 2025 – Jan 2026

76 m
Deepest dive
3:26
Longest dive
144
Dives
Sightings
12
Days between first and last sighting
57
Deepest dive on record
76 m · this residency

Dive stats modelled within real depth limits — not measured

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SightingSeafloorSea tempDeepest dive (modelled)
Dec 4, 202571 m—62 m
Dec 4, 202590 m—61 m
Dec 11, 202537 m—19 m
Dec 11, 202553 m—43 m
Dec 21, 202575 m—19 m
Dec 29, 202545 m—40 m
Dec 30, 202546 m—37 m
Jan 12, 202638 m15.1°C33 m
Jan 17, 202685 m14.1°C76 m
Jan 26, 202657 m14.3°C43 m
Jan 27, 202699 m16.4°C54 m
Jan 30, 202634 m14.6°C28 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 4, 2025 — seafloor 71 m (measured), deepest dive 62 m (modelled)Dec 4Dec 4, 2025 — seafloor 90 m (measured), deepest dive 61 m (modelled)Dec 4Dec 11, 2025 — seafloor 37 m (measured), deepest dive 19 m (modelled)Dec 11Dec 11, 2025 — seafloor 53 m (measured), deepest dive 43 m (modelled)Dec 11Dec 21, 2025 — seafloor 75 m (measured), deepest dive 19 m (modelled)Dec 21Dec 29, 2025 — seafloor 45 m (measured), deepest dive 40 m (modelled)Dec 29Dec 30, 2025 — seafloor 46 m (measured), deepest dive 37 m (modelled)Dec 30Jan 12, 2026 — seafloor 38 m (measured), deepest dive 33 m (modelled)Jan 12Jan 17, 2026 — seafloor 85 m (measured), deepest dive 76 m (modelled)Jan 17Jan 26, 2026 — seafloor 57 m (measured), deepest dive 43 m (modelled)Jan 26Jan 27, 2026 — seafloor 99 m (measured), deepest dive 54 m (modelled)Jan 27Jan 30, 2026 — seafloor 34 m (measured), deepest dive 28 m (modelled)Jan 30

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

Dives

76 m
Deepest dive
3:26
Longest dive
144
Dives
20 m
Avg dive depth
12
Sightings
57
Days first → last

Dive metrics are modelled within real depth limits — not measured

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Dive profile

modelled
05010076 mstartdive sequence (illustrative)

Depth shaped by the seafloor limit here (85 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 · Jan 17, 2026

measured
Seafloor depth
85 m
Sea-surface temperature
14.1°C
Distance from shore
7.0 km

Across the residency · 12 sightings

measured
Seafloor depth
34 m – 99 m
Sea-surface temperature
14.1°C – 16.4°C
Distance from shore
2.0 km – 11.0 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 12 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.