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

HW-MN0805395 – Residency

3rd sighting in South Africa
Fluke of HW-MN0805395
HW-MN0805395 Confirmed in the catalog @146934
Nov 2 – Dec 28, 2025 · South Africa

South Africa · Nov – Dec 2025

74 m
Deepest dive
2:36
Longest dive
57
Dives
Sightings
4
Days between first and last sighting
56
Deepest dive on record
74 m · this residency

Dive stats modelled within real depth limits — not measured

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SightingSeafloorSea tempDeepest dive (modelled)
Nov 2, 202593 m—61 m
Dec 21, 202561 m—20 m
Dec 27, 202562 m—46 m
Dec 28, 202581 m—74 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 2, 2025 — seafloor 93 m (measured), deepest dive 61 m (modelled)Nov 2Dec 21, 2025 — seafloor 61 m (measured), deepest dive 20 m (modelled)Dec 21Dec 27, 2025 — seafloor 62 m (measured), deepest dive 46 m (modelled)Dec 27Dec 28, 2025 — seafloor 81 m (measured), deepest dive 74 m (modelled)Dec 28

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

Dives

74 m
Deepest dive
2:36
Longest dive
57
Dives
24 m
Avg dive depth
4
Sightings
56
Days first → last

Dive metrics are modelled within real depth limits — not measured

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Dive profile

modelled
05010074 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 · Dec 28, 2025

measured
Seafloor depth
81 m
Sea-surface temperature
—
Distance from shore
10.0 km

Across the residency · 4 sightings

measured
Seafloor depth
61 m – 93 m
Sea-surface temperature
—
Distance from shore
5.0 km – 19.0 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 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.