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

HW-MN0801109 – Residency

11th sighting in South Africa
Fluke of HW-MN0801109
HW-MN0801109 Confirmed in the catalog @83374
Nov 7 – Dec 30, 2025 · South Africa

South Africa · Nov – Dec 2025

49 m
Deepest dive
2:00
Longest dive
48
Dives
Sightings
4
Days between first and last sighting
53

Dive stats modelled within real depth limits — not measured

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SightingSeafloorSea tempDeepest dive (modelled)
Nov 7, 202552 m—45 m
Nov 27, 202530 m—26 m
Dec 30, 202546 m—25 m
Dec 30, 202562 m—49 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 7, 2025 — seafloor 52 m (measured), deepest dive 45 m (modelled)Nov 7Nov 27, 2025 — seafloor 30 m (measured), deepest dive 26 m (modelled)Nov 27Dec 30, 2025 — seafloor 46 m (measured), deepest dive 25 m (modelled)Dec 30Dec 30, 2025 — seafloor 62 m (measured), deepest dive 49 m (modelled)Dec 30

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

Dives

49 m
Deepest dive
2:00
Longest dive
48
Dives
17 m
Avg dive depth
4
Sightings
53
Days first → last

Dive metrics are modelled within real depth limits — not measured

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Dive profile

modelled
0255049 mstartdive sequence (illustrative)

Depth shaped by the seafloor limit here (62 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 30, 2025

measured
Seafloor depth
62 m
Sea-surface temperature
—
Distance from shore
9.0 km

Across the residency · 4 sightings

measured
Seafloor depth
30 m – 62 m
Sea-surface temperature
—
Distance from shore
3.0 km – 9.0 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.