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

HW-MN0806128 – Residency

3rd sighting in South Africa
Fluke of HW-MN0806128
HW-MN0806128 Confirmed in the catalog @151591
Jan 29 – Feb 10, 2026 · South Africa

South Africa · Jan – Feb 2026

40 m
Deepest dive
1:48
Longest dive
31
Dives
Sightings
3
Days between first and last sighting
12
Deepest dive on record
40 m · this residency

Dive stats modelled within real depth limits — not measured

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SightingSeafloorSea tempDeepest dive (modelled)
Jan 29, 202664 m14.7°C33 m
Jan 30, 202634 m14.6°C28 m
Feb 10, 202679 m16.2°C40 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
Jan 29, 2026 — seafloor 64 m (measured), deepest dive 33 m (modelled)Jan 29Jan 30, 2026 — seafloor 34 m (measured), deepest dive 28 m (modelled)Jan 30Feb 10, 2026 — seafloor 79 m (measured), deepest dive 40 m (modelled)Feb 10

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

Dives

40 m
Deepest dive
1:48
Longest dive
31
Dives
17 m
Avg dive depth
3
Sightings
12
Days first → last

Dive metrics are modelled within real depth limits — not measured

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Dive profile

modelled
0255040 mstartdive sequence (illustrative)

Depth shaped by the seafloor limit here (79 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 10, 2026

measured
Seafloor depth
79 m
Sea-surface temperature
16.2°C
Distance from shore
5.0 km

Across the residency · 3 sightings

measured
Seafloor depth
34 m – 79 m
Sea-surface temperature
14.6°C – 16.2°C
Distance from shore
5.0 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 3 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.