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South Africa

HW-MN0801810 – Residency

10th sighting in South Africa
Fluke of HW-MN0801810
HW-MN0801810 Confirmed in the catalog @89283
Nov 3, 2025 – Jan 6, 2026 · South Africa

South Africa · Nov 2025 – Jan 2026

80 m
Deepest dive
3:11
Longest dive
79
Dives
Sightings
8
Days between first and last sighting
64
Deepest dive on record
80 m · this residency

Dive stats modelled within real depth limits — not measured

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SightingSeafloorSea tempDeepest dive (modelled)
Nov 3, 202580 m—64 m
Dec 30, 202562 m—48 m
Dec 30, 202526 m—22 m
Dec 31, 202545 m—20 m
Jan 5, 202663 m14.8°C33 m
Jan 5, 202682 m14.8°C70 m
Jan 5, 202665 m14.8°C41 m
Jan 6, 202693 m15.2°C80 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 3, 2025 — seafloor 80 m (measured), deepest dive 64 m (modelled)Nov 3Dec 30, 2025 — seafloor 62 m (measured), deepest dive 48 m (modelled)Dec 30Dec 30, 2025 — seafloor 26 m (measured), deepest dive 22 m (modelled)Dec 30Dec 31, 2025 — seafloor 45 m (measured), deepest dive 20 m (modelled)Dec 31Jan 5, 2026 — seafloor 63 m (measured), deepest dive 33 m (modelled)Jan 5Jan 5, 2026 — seafloor 82 m (measured), deepest dive 70 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 80 m (modelled)Jan 6

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

Dives

80 m
Deepest dive
3:11
Longest dive
79
Dives
21 m
Avg dive depth
8
Sightings
64
Days first → last

Dive metrics are modelled within real depth limits — not measured

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Dive profile

modelled
05010080 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 · 8 sightings

measured
Seafloor depth
26 m – 93 m
Sea-surface temperature
14.8°C – 15.2°C
Distance from shore
6.0 km – 24.0 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.