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

HW-MN0805609 – Residency

6th sighting in South Africa
Fluke of HW-MN0805609
HW-MN0805609 Confirmed in the catalog @148810
Nov 25 – Dec 30, 2025 · South Africa

South Africa · Nov – Dec 2025

54 m
Deepest dive
2:28
Longest dive
65
Dives
Sightings
6
Days between first and last sighting
35
Deepest dive on record
54 m · this residency

Dive stats modelled within real depth limits — not measured

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SightingSeafloorSea tempDeepest dive (modelled)
Nov 25, 202557 m—46 m
Nov 25, 202563 m—47 m
Dec 4, 202572 m—54 m
Dec 29, 202561 m—51 m
Dec 30, 202562 m—53 m
Dec 30, 202546 m—40 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 25, 2025 — seafloor 57 m (measured), deepest dive 46 m (modelled)Nov 25Nov 25, 2025 — seafloor 63 m (measured), deepest dive 47 m (modelled)Nov 25Dec 4, 2025 — seafloor 72 m (measured), deepest dive 54 m (modelled)Dec 4Dec 29, 2025 — seafloor 61 m (measured), deepest dive 51 m (modelled)Dec 29Dec 30, 2025 — seafloor 62 m (measured), deepest dive 53 m (modelled)Dec 30Dec 30, 2025 — seafloor 46 m (measured), deepest dive 40 m (modelled)Dec 30

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

Dives

54 m
Deepest dive
2:28
Longest dive
65
Dives
20 m
Avg dive depth
6
Sightings
35
Days first → last

Dive metrics are modelled within real depth limits — not measured

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Dive profile

modelled
05010054 mstartdive sequence (illustrative)

Depth shaped by the seafloor limit here (72 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 4, 2025

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

Across the residency · 6 sightings

measured
Seafloor depth
46 m – 72 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 6 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.