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South Africa

HW-MN0805441 – Residency

19th sighting in South Africa
Fluke of HW-MN0805441
HW-MN0805441 Confirmed in the catalog @147045
Nov 8, 2025 – Jan 30, 2026 · South Africa

South Africa · Nov 2025 – Jan 2026

75 m
Deepest dive
3:18
Longest dive
165
Dives
Sightings
13
Days between first and last sighting
83
Deepest dive on record
75 m · this residency

Dive stats modelled within real depth limits — not measured

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SightingSeafloorSea tempDeepest dive (modelled)
Nov 8, 202545 m—39 m
Nov 25, 202557 m—50 m
Dec 27, 202562 m—54 m
Dec 28, 202561 m—49 m
Dec 28, 202581 m—38 m
Dec 29, 202561 m—53 m
Dec 30, 202546 m—37 m
Jan 14, 202637 m15.7°C29 m
Jan 17, 202682 m14.1°C75 m
Jan 26, 202657 m14.3°C49 m
Jan 27, 202699 m16.4°C69 m
Jan 29, 202664 m14.7°C47 m
Jan 30, 202634 m14.6°C31 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
Nov 8, 2025 — seafloor 45 m (measured), deepest dive 39 m (modelled)Nov 8Nov 25, 2025 — seafloor 57 m (measured), deepest dive 50 m (modelled)Dec 27, 2025 — seafloor 62 m (measured), deepest dive 54 m (modelled)Dec 28, 2025 — seafloor 61 m (measured), deepest dive 49 m (modelled)Dec 28Dec 28, 2025 — seafloor 81 m (measured), deepest dive 38 m (modelled)Dec 29, 2025 — seafloor 61 m (measured), deepest dive 53 m (modelled)Dec 30, 2025 — seafloor 46 m (measured), deepest dive 37 m (modelled)Dec 30Jan 14, 2026 — seafloor 37 m (measured), deepest dive 29 m (modelled)Jan 17, 2026 — seafloor 82 m (measured), deepest dive 75 m (modelled)Jan 26, 2026 — seafloor 57 m (measured), deepest dive 49 m (modelled)Jan 26Jan 27, 2026 — seafloor 99 m (measured), deepest dive 69 m (modelled)Jan 29, 2026 — seafloor 64 m (measured), deepest dive 47 m (modelled)Jan 30, 2026 — seafloor 34 m (measured), deepest dive 31 m (modelled)Jan 30

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

Dives

75 m
Deepest dive
3:18
Longest dive
165
Dives
20 m
Avg dive depth
13
Sightings
83
Days first → last

Dive metrics are modelled within real depth limits — not measured

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Dive profile

modelled
05010075 mstartdive sequence (illustrative)

Depth shaped by the seafloor limit here (82 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
82 m
Sea-surface temperature
14.1°C
Distance from shore
9.0 km

Across the residency · 13 sightings

measured
Seafloor depth
34 m – 99 m
Sea-surface temperature
14.1°C – 16.4°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 13 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.