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

HW-MN0805812 – Residency

6th sighting in South Africa
Fluke of HW-MN0805812
HW-MN0805812 Confirmed in the catalog @150459
Dec 29, 2025 – Feb 7, 2026 · South Africa

South Africa · Dec 2025 – Feb 2026

67 m
Deepest dive
2:09
Longest dive
77
Dives
Sightings
6
Days between first and last sighting
40
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 29, 202545 m—29 m
Dec 30, 202562 m—47 m
Dec 30, 202546 m—37 m
Dec 31, 202545 m—34 m
Jan 29, 202662 m14.7°C39 m
Feb 7, 202681 m16.8°C67 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 29, 2025 — seafloor 45 m (measured), deepest dive 29 m (modelled)Dec 29Dec 30, 2025 — seafloor 62 m (measured), deepest dive 47 m (modelled)Dec 30Dec 30, 2025 — seafloor 46 m (measured), deepest dive 37 m (modelled)Dec 30Dec 31, 2025 — seafloor 45 m (measured), deepest dive 34 m (modelled)Dec 31Jan 29, 2026 — seafloor 62 m (measured), deepest dive 39 m (modelled)Jan 29Feb 7, 2026 — seafloor 81 m (measured), deepest dive 67 m (modelled)Feb 7

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

Dives

67 m
Deepest dive
2:09
Longest dive
77
Dives
20 m
Avg dive depth
6
Sightings
40
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 (81 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 · Feb 7, 2026

measured
Seafloor depth
81 m
Sea-surface temperature
16.8°C
Distance from shore
4.0 km

Across the residency · 6 sightings

measured
Seafloor depth
45 m – 81 m
Sea-surface temperature
14.7°C – 16.8°C
Distance from shore
3.0 km – 9.0 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 6 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.