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

HW-MN0804186 – Residency

4th sighting in South Africa
Fluke of HW-MN0804186
HW-MN0804186 Confirmed in the catalog @127544
Nov 2 – Dec 30, 2025 · South Africa

South Africa · Nov – Dec 2025

46 m
Deepest dive
1:34
Longest dive
23
Dives
Sightings
2
Days between first and last sighting
58

Dive stats modelled within real depth limits — not measured

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SightingSeafloorSea tempDeepest dive (modelled)
Nov 2, 202582 m—46 m
Dec 30, 202526 m—21 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 82 m (measured), deepest dive 46 m (modelled)Nov 2Dec 30, 2025 — seafloor 26 m (measured), deepest dive 21 m (modelled)Dec 30

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

Dives

46 m
Deepest dive
1:34
Longest dive
23
Dives
17 m
Avg dive depth
2
Sightings
58
Days first → last

Dive metrics are modelled within real depth limits — not measured

Get actual dive data with Risa Deep →

Dive profile

modelled
0255046 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 · Nov 2, 2025

measured
Seafloor depth
82 m
Sea-surface temperature
—
Distance from shore
26.0 km

Across the residency · 2 sightings

measured
Seafloor depth
26 m – 82 m
Sea-surface temperature
—
Distance from shore
7.0 km – 26.0 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 2 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.