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South Africa

HW-MN0805953 – Residency

8th sighting in South Africa
Fluke of HW-MN0805953
HW-MN0805953 Confirmed in the catalog @150873
Dec 29, 2025 – Feb 10, 2026 · South Africa

South Africa · Dec 2025 – Feb 2026

69 m
Deepest dive
2:36
Longest dive
84
Dives
Sightings
8
Days between first and last sighting
43
Deepest dive on record
69 m · this residency

Dive stats modelled within real depth limits — not measured

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SightingSeafloorSea tempDeepest dive (modelled)
Dec 29, 202545 m—41 m
Dec 30, 202546 m—33 m
Dec 31, 202545 m—39 m
Jan 26, 202642 m14.3°C35 m
Jan 27, 202699 m16.4°C45 m
Jan 30, 202634 m14.6°C26 m
Feb 7, 202682 m16.8°C33 m
Feb 10, 202679 m16.2°C69 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 41 m (modelled)Dec 29Dec 30, 2025 — seafloor 46 m (measured), deepest dive 33 m (modelled)Dec 30Dec 31, 2025 — seafloor 45 m (measured), deepest dive 39 m (modelled)Dec 31Jan 26, 2026 — seafloor 42 m (measured), deepest dive 35 m (modelled)Jan 26Jan 27, 2026 — seafloor 99 m (measured), deepest dive 45 m (modelled)Jan 27Jan 30, 2026 — seafloor 34 m (measured), deepest dive 26 m (modelled)Jan 30Feb 7, 2026 — seafloor 82 m (measured), deepest dive 33 m (modelled)Feb 7Feb 10, 2026 — seafloor 79 m (measured), deepest dive 69 m (modelled)Feb 10

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

Dives

69 m
Deepest dive
2:36
Longest dive
84
Dives
18 m
Avg dive depth
8
Sightings
43
Days first → last

Dive metrics are modelled within real depth limits — not measured

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Dive profile

modelled
05010069 mstartdive sequence (illustrative)

Depth shaped by the seafloor limit here (79 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 · Feb 10, 2026

measured
Seafloor depth
79 m
Sea-surface temperature
16.2°C
Distance from shore
5.0 km

Across the residency · 8 sightings

measured
Seafloor depth
34 m – 99 m
Sea-surface temperature
14.3°C – 16.8°C
Distance from shore
3.0 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 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.