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

HW-MN0805756 – Residency

5th sighting in South Africa
Fluke of HW-MN0805756
HW-MN0805756 Confirmed in the catalog @150371
Dec 27, 2025 – Jan 14, 2026 · South Africa

South Africa · Dec 2025 – Jan 2026

39 m
Deepest dive
1:53
Longest dive
35
Dives
Sightings
5
Days between first and last sighting
18
Deepest dive on record
39 m · this residency

Dive stats modelled within real depth limits — not measured

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SightingSeafloorSea tempDeepest dive (modelled)
Dec 27, 202562 m—36 m
Dec 30, 202526 m—24 m
Dec 31, 202545 m—39 m
Jan 12, 202638 m15.1°C35 m
Jan 14, 202637 m15.7°C17 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 27, 2025 — seafloor 62 m (measured), deepest dive 36 m (modelled)Dec 27Dec 30, 2025 — seafloor 26 m (measured), deepest dive 24 m (modelled)Dec 30Dec 31, 2025 — seafloor 45 m (measured), deepest dive 39 m (modelled)Dec 31Jan 12, 2026 — seafloor 38 m (measured), deepest dive 35 m (modelled)Jan 12Jan 14, 2026 — seafloor 37 m (measured), deepest dive 17 m (modelled)Jan 14

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

Dives

39 m
Deepest dive
1:53
Longest dive
35
Dives
17 m
Avg dive depth
5
Sightings
18
Days first → last

Dive metrics are modelled within real depth limits — not measured

Get actual dive data with Risa Deep →

Dive profile

modelled
0255039 mstartdive sequence (illustrative)

Depth shaped by the seafloor limit here (45 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 31, 2025

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

Across the residency · 5 sightings

measured
Seafloor depth
26 m – 62 m
Sea-surface temperature
15.1°C – 15.7°C
Distance from shore
5.0 km – 8.0 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 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.