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

HW-MN0805021 – Residency

8th sighting in South Africa
Fluke of HW-MN0805021
HW-MN0805021 Confirmed in the catalog @136006
Nov 8, 2025 – Jan 5, 2026 · South Africa

South Africa · Nov 2025 – Jan 2026

70 m
Deepest dive
2:36
Longest dive
67
Dives
Sightings
7
Days between first and last sighting
58
Deepest dive on record
70 m · this residency

Dive stats modelled within real depth limits — not measured

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SightingSeafloorSea tempDeepest dive (modelled)
Nov 8, 202545 m—34 m
Dec 28, 202581 m—70 m
Dec 29, 202558 m—23 m
Dec 31, 202565 m—32 m
Dec 31, 202545 m15.3°C36 m
Jan 5, 202663 m14.8°C50 m
Jan 5, 202682 m14.8°C24 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 8, 2025 — seafloor 45 m (measured), deepest dive 34 m (modelled)Nov 8Dec 28, 2025 — seafloor 81 m (measured), deepest dive 70 m (modelled)Dec 28Dec 29, 2025 — seafloor 58 m (measured), deepest dive 23 m (modelled)Dec 29Dec 31, 2025 — seafloor 65 m (measured), deepest dive 32 m (modelled)Dec 31Dec 31, 2025 — seafloor 45 m (measured), deepest dive 36 m (modelled)Dec 31Jan 5, 2026 — seafloor 63 m (measured), deepest dive 50 m (modelled)Jan 5Jan 5, 2026 — seafloor 82 m (measured), deepest dive 24 m (modelled)Jan 5

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

Dives

70 m
Deepest dive
2:36
Longest dive
67
Dives
21 m
Avg dive depth
7
Sightings
58
Days first → last

Dive metrics are modelled within real depth limits — not measured

Get actual dive data with Risa Deep →

Dive profile

modelled
05010070 mstartdive sequence (illustrative)

Depth shaped by the seafloor limit here (81 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 28, 2025

measured
Seafloor depth
81 m
Sea-surface temperature
—
Distance from shore
10.0 km

Across the residency · 7 sightings

measured
Seafloor depth
45 m – 82 m
Sea-surface temperature
14.8°C – 15.3°C
Distance from shore
3.0 km – 10.0 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 7 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.