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South Africa

HW-MN0804865 – Residency

17th sighting in South Africa
Fluke of HW-MN0804865
HW-MN0804865 Confirmed in the catalog @133552
Dec 29, 2025 – Jan 17, 2026 · South Africa

South Africa · Dec 2025 – Jan 2026

71 m
Deepest dive
2:49
Longest dive
96
Dives
Sightings
10
Days between first and last sighting
19
Deepest dive on record
71 m · this residency

Dive stats modelled within real depth limits — not measured

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SightingSeafloorSea tempDeepest dive (modelled)
Dec 29, 202545 m—33 m
Dec 30, 202546 m—35 m
Jan 2, 202682 m15.6°C56 m
Jan 5, 202663 m14.8°C50 m
Jan 5, 202682 m14.8°C47 m
Jan 5, 202665 m14.8°C41 m
Jan 6, 202693 m15.2°C71 m
Jan 8, 202649 m20.4°C26 m
Jan 12, 202638 m15.1°C29 m
Jan 17, 202685 m14.1°C67 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 29, 2025 — seafloor 45 m (measured), deepest dive 33 m (modelled)Dec 29Dec 30, 2025 — seafloor 46 m (measured), deepest dive 35 m (modelled)Dec 30Jan 2, 2026 — seafloor 82 m (measured), deepest dive 56 m (modelled)Jan 2Jan 5, 2026 — seafloor 63 m (measured), deepest dive 50 m (modelled)Jan 5Jan 5, 2026 — seafloor 82 m (measured), deepest dive 47 m (modelled)Jan 5Jan 5, 2026 — seafloor 65 m (measured), deepest dive 41 m (modelled)Jan 5Jan 6, 2026 — seafloor 93 m (measured), deepest dive 71 m (modelled)Jan 6Jan 8, 2026 — seafloor 49 m (measured), deepest dive 26 m (modelled)Jan 8Jan 12, 2026 — seafloor 38 m (measured), deepest dive 29 m (modelled)Jan 12Jan 17, 2026 — seafloor 85 m (measured), deepest dive 67 m (modelled)Jan 17

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

Dives

71 m
Deepest dive
2:49
Longest dive
96
Dives
20 m
Avg dive depth
10
Sightings
19
Days first → last

Dive metrics are modelled within real depth limits — not measured

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Dive profile

modelled
05010071 mstartdive sequence (illustrative)

Depth shaped by the seafloor limit here (93 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 6, 2026

measured
Seafloor depth
93 m
Sea-surface temperature
15.2°C
Distance from shore
9.0 km

Across the residency · 10 sightings

measured
Seafloor depth
38 m – 93 m
Sea-surface temperature
14.1°C – 20.4°C
Distance from shore
3.0 km – 12.0 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 10 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.