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

HW-MN0804960 – Residency

4th sighting in South Africa
Fluke of HW-MN0804960
HW-MN0804960 Confirmed in the catalog @134862
Feb 7 – Mar 28, 2025 · South Africa

South Africa · Feb – Mar 2025

41 m
Deepest dive
2:03
Longest dive
35
Dives
Sightings
4
Days between first and last sighting
49

Dive stats modelled within real depth limits — not measured

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SightingSeafloorSea tempDeepest dive (modelled)
Feb 7, 202544 m—22 m
Feb 19, 202544 m—26 m
Feb 20, 202549 m—41 m
Mar 28, 202598 m—25 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
Feb 7, 2025 — seafloor 44 m (measured), deepest dive 22 m (modelled)Feb 7Feb 19, 2025 — seafloor 44 m (measured), deepest dive 26 m (modelled)Feb 19Feb 20, 2025 — seafloor 49 m (measured), deepest dive 41 m (modelled)Feb 20Mar 28, 2025 — seafloor 98 m (measured), deepest dive 25 m (modelled)Mar 28

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

Dives

41 m
Deepest dive
2:03
Longest dive
35
Dives
16 m
Avg dive depth
4
Sightings
49
Days first → last

Dive metrics are modelled within real depth limits — not measured

Get actual dive data with Risa Deep →

Dive profile

modelled
0255041 mstartdive sequence (illustrative)

Depth shaped by the seafloor limit here (49 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 20, 2025

measured
Seafloor depth
49 m
Sea-surface temperature
—
Distance from shore
3.0 km

Across the residency · 4 sightings

measured
Seafloor depth
44 m – 98 m
Sea-surface temperature
—
Distance from shore
3.0 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 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.