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

HW-MN0804846 – Residency

7th sighting in South Africa
Fluke of HW-MN0804846
HW-MN0804846 Confirmed in the catalog @133311
Dec 11, 2025 – Jan 14, 2026 · South Africa

South Africa · Dec 2025 – Jan 2026

47 m
Deepest dive
2:04
Longest dive
41
Dives
Sightings
5
Days between first and last sighting
34
Deepest dive on record
47 m · this residency

Dive stats modelled within real depth limits — not measured

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SightingSeafloorSea tempDeepest dive (modelled)
Dec 11, 202554 m—47 m
Dec 30, 202538 m—27 m
Dec 30, 202546 m—39 m
Dec 31, 202545 m—20 m
Jan 14, 202637 m15.7°C25 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 11, 2025 — seafloor 54 m (measured), deepest dive 47 m (modelled)Dec 11Dec 30, 2025 — seafloor 38 m (measured), deepest dive 27 m (modelled)Dec 30Dec 30, 2025 — seafloor 46 m (measured), deepest dive 39 m (modelled)Dec 30Dec 31, 2025 — seafloor 45 m (measured), deepest dive 20 m (modelled)Dec 31Jan 14, 2026 — seafloor 37 m (measured), deepest dive 25 m (modelled)Jan 14

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

Dives

47 m
Deepest dive
2:04
Longest dive
41
Dives
16 m
Avg dive depth
5
Sightings
34
Days first → last

Dive metrics are modelled within real depth limits — not measured

Get actual dive data with Risa Deep →

Dive profile

modelled
0255047 mstartdive sequence (illustrative)

Depth shaped by the seafloor limit here (54 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 · Dec 11, 2025

measured
Seafloor depth
54 m
Sea-surface temperature
—
Distance from shore
2.0 km

Across the residency · 5 sightings

measured
Seafloor depth
37 m – 54 m
Sea-surface temperature
15.7°C
Distance from shore
2.0 km – 7.0 km

Sources: GEBCO seafloor grid · PacIOOS coastline distance

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

Source records

This activity is assembled from 5 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.