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

HW-MN0805815 – Residency

5th sighting in South Africa
Fluke of HW-MN0805815
HW-MN0805815 Confirmed in the catalog @150462
Nov 27, 2025 – Jan 5, 2026 · South Africa

South Africa · Nov 2025 – Jan 2026

58 m
Deepest dive
2:13
Longest dive
69
Dives
Sightings
5
Days between first and last sighting
39
Deepest dive on record
58 m · this residency

Dive stats modelled within real depth limits — not measured

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SightingSeafloorSea tempDeepest dive (modelled)
Nov 27, 202517 m—15 m
Nov 29, 202552 m—39 m
Dec 30, 202562 m—51 m
Dec 30, 202546 m—42 m
Jan 5, 202671 m—58 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 27, 2025 — seafloor 17 m (measured), deepest dive 15 m (modelled)Nov 27Nov 29, 2025 — seafloor 52 m (measured), deepest dive 39 m (modelled)Nov 29Dec 30, 2025 — seafloor 62 m (measured), deepest dive 51 m (modelled)Dec 30Dec 30, 2025 — seafloor 46 m (measured), deepest dive 42 m (modelled)Dec 30Jan 5, 2026 — seafloor 71 m (measured), deepest dive 58 m (modelled)Jan 5

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

Dives

58 m
Deepest dive
2:13
Longest dive
69
Dives
19 m
Avg dive depth
5
Sightings
39
Days first → last

Dive metrics are modelled within real depth limits — not measured

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Dive profile

modelled
05010058 mstartdive sequence (illustrative)

Depth shaped by the seafloor limit here (71 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, 2026

measured
Seafloor depth
71 m
Sea-surface temperature
—
Distance from shore
6.0 km

Across the residency · 5 sightings

measured
Seafloor depth
17 m – 71 m
Sea-surface temperature
—
Distance from shore
3.0 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 5 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.