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

HW-MN0804787 – Residency

6th sighting in South Africa
Fluke of HW-MN0804787
HW-MN0804787 Confirmed in the catalog @133020
Dec 28, 2025 – Jan 29, 2026 · South Africa

South Africa · Dec 2025 – Jan 2026

67 m
Deepest dive
2:13
Longest dive
32
Dives
Sightings
4
Days between first and last sighting
32
Deepest dive on record
67 m · this residency

Dive stats modelled within real depth limits — not measured

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SightingSeafloorSea tempDeepest dive (modelled)
Dec 28, 202581 m—53 m
Jan 17, 202685 m14.1°C67 m
Jan 27, 202699 m16.4°C39 m
Jan 29, 202664 m14.7°C51 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 53 m (modelled)Dec 28Jan 17, 2026 — seafloor 85 m (measured), deepest dive 67 m (modelled)Jan 17Jan 27, 2026 — seafloor 99 m (measured), deepest dive 39 m (modelled)Jan 27Jan 29, 2026 — seafloor 64 m (measured), deepest dive 51 m (modelled)Jan 29

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

Dives

67 m
Deepest dive
2:13
Longest dive
32
Dives
23 m
Avg dive depth
4
Sightings
32
Days first → last

Dive metrics are modelled within real depth limits — not measured

Get actual dive data with Risa Deep →

Dive profile

modelled
05010067 mstartdive sequence (illustrative)

Depth shaped by the seafloor limit here (85 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
85 m
Sea-surface temperature
14.1°C
Distance from shore
7.0 km

Across the residency · 4 sightings

measured
Seafloor depth
64 m – 99 m
Sea-surface temperature
14.1°C – 16.4°C
Distance from shore
7.0 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 4 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.