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South Africa

HW-MN0805853 – Residency

8th sighting in South Africa
Fluke of HW-MN0805853
HW-MN0805853 Confirmed in the catalog @150531
Dec 28, 2025 – Jan 28, 2026 · South Africa

South Africa · Dec 2025 – Jan 2026

63 m
Deepest dive
2:50
Longest dive
113
Dives
Sightings
8
Days between first and last sighting
31
Deepest dive on record
63 m · this residency

Dive stats modelled within real depth limits — not measured

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SightingSeafloorSea tempDeepest dive (modelled)
Dec 28, 202581 m—46 m
Dec 28, 202561 m—50 m
Dec 29, 202545 m—33 m
Dec 30, 202546 m—34 m
Dec 31, 202545 m—14 m
Jan 5, 202665 m14.8°C21 m
Jan 26, 202670 m15.9°C63 m
Jan 28, 202642 m19.0°C37 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 81 m (measured), deepest dive 46 m (modelled)Dec 28Dec 28, 2025 — seafloor 61 m (measured), deepest dive 50 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 34 m (modelled)Dec 30Dec 31, 2025 — seafloor 45 m (measured), deepest dive 14 m (modelled)Dec 31Jan 5, 2026 — seafloor 65 m (measured), deepest dive 21 m (modelled)Jan 5Jan 26, 2026 — seafloor 70 m (measured), deepest dive 63 m (modelled)Jan 26Jan 28, 2026 — seafloor 42 m (measured), deepest dive 37 m (modelled)Jan 28

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

Dives

63 m
Deepest dive
2:50
Longest dive
113
Dives
17 m
Avg dive depth
8
Sightings
31
Days first → last

Dive metrics are modelled within real depth limits — not measured

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Dive profile

modelled
05010063 mstartdive sequence (illustrative)

Depth shaped by the seafloor limit here (70 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 26, 2026

measured
Seafloor depth
70 m
Sea-surface temperature
15.9°C
Distance from shore
7.0 km

Across the residency · 8 sightings

measured
Seafloor depth
42 m – 81 m
Sea-surface temperature
14.8°C – 19.0°C
Distance from shore
3.0 km – 10.0 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 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.