Activity map — real sighting points on an OpenStreetMap basemap © OpenStreetMap contributors
South Africa

HW-MN0804627 – Residency

11th sighting in South Africa
Fluke of HW-MN0804627
HW-MN0804627 Confirmed in the catalog @132714
Dec 7, 2025 – Jan 5, 2026 · South Africa

South Africa · Dec 2025 – Jan 2026

61 m
Deepest dive
2:35
Longest dive
97
Dives
Sightings
7
Days between first and last sighting
29

Dive stats modelled within real depth limits — not measured

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SightingSeafloorSea tempDeepest dive (modelled)
Dec 7, 202548 m—21 m
Dec 10, 202548 m—39 m
Dec 11, 202537 m—32 m
Dec 18, 202579 m—55 m
Jan 2, 202682 m15.6°C24 m
Jan 5, 202682 m14.8°C61 m
Jan 5, 202665 m14.8°C48 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 7, 2025 — seafloor 48 m (measured), deepest dive 21 m (modelled)Dec 7Dec 10, 2025 — seafloor 48 m (measured), deepest dive 39 m (modelled)Dec 10Dec 11, 2025 — seafloor 37 m (measured), deepest dive 32 m (modelled)Dec 11Dec 18, 2025 — seafloor 79 m (measured), deepest dive 55 m (modelled)Dec 18Jan 2, 2026 — seafloor 82 m (measured), deepest dive 24 m (modelled)Jan 2Jan 5, 2026 — seafloor 82 m (measured), deepest dive 61 m (modelled)Jan 5Jan 5, 2026 — seafloor 65 m (measured), deepest dive 48 m (modelled)Jan 5

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

Dives

61 m
Deepest dive
2:35
Longest dive
97
Dives
19 m
Avg dive depth
7
Sightings
29
Days first → last

Dive metrics are modelled within real depth limits — not measured

Get actual dive data with Risa Deep →

Dive profile

modelled
05010061 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 5, 2026

measured
Seafloor depth
82 m
Sea-surface temperature
14.8°C
Distance from shore
10.0 km

Across the residency · 7 sightings

measured
Seafloor depth
37 m – 82 m
Sea-surface temperature
14.8°C – 15.6°C
Distance from shore
2.0 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 7 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.