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

HW-MN0804640 – Residency

4th sighting in South Africa
Fluke of HW-MN0804640
HW-MN0804640 Confirmed in the catalog @132777
Dec 17, 2024 – Jan 19, 2025 · South Africa

South Africa · Dec 2024 – Jan 2025

64 m
Deepest dive
3:34
Longest dive
36
Dives
Sightings
4
Days between first and last sighting
33
Deepest dive on record
64 m · this residency

Dive stats modelled within real depth limits — not measured

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SightingSeafloorSea tempDeepest dive (modelled)
Dec 17, 202470 m—57 m
Dec 17, 202470 m—52 m
Jan 5, 202584 m—64 m
Jan 19, 202568 m—61 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 17, 2024 — seafloor 70 m (measured), deepest dive 57 m (modelled)Dec 17Dec 17, 2024 — seafloor 70 m (measured), deepest dive 52 m (modelled)Dec 17Jan 5, 2025 — seafloor 84 m (measured), deepest dive 64 m (modelled)Jan 5Jan 19, 2025 — seafloor 68 m (measured), deepest dive 61 m (modelled)Jan 19

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

Dives

64 m
Deepest dive
3:34
Longest dive
36
Dives
27 m
Avg dive depth
4
Sightings
33
Days first → last

Dive metrics are modelled within real depth limits — not measured

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Dive profile

modelled
05010064 mstartdive sequence (illustrative)

Depth shaped by the seafloor limit here (84 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 · Jan 5, 2025

measured
Seafloor depth
84 m
Sea-surface temperature
—
Distance from shore
7.0 km

Across the residency · 4 sightings

measured
Seafloor depth
68 m – 84 m
Sea-surface temperature
—
Distance from shore
7.0 km – 12.0 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.