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

HW-MN0805809 – Residency

11th sighting in South Africa
Fluke of HW-MN0805809
HW-MN0805809 Confirmed in the catalog @150456
Dec 29, 2025 – Feb 16, 2026 · South Africa

South Africa · Dec 2025 – Feb 2026

56 m
Deepest dive
2:31
Longest dive
133
Dives
Sightings
11
Days between first and last sighting
49
Deepest dive on record
56 m · this residency

Dive stats modelled within real depth limits — not measured

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SightingSeafloorSea tempDeepest dive (modelled)
Dec 29, 202561 m—52 m
Dec 29, 202545 m—28 m
Dec 30, 202546 m—25 m
Dec 30, 202562 m—52 m
Jan 12, 202638 m15.1°C32 m
Jan 14, 202637 m15.7°C32 m
Jan 17, 202685 m14.1°C56 m
Jan 26, 202657 m14.3°C34 m
Jan 29, 202664 m14.7°C27 m
Jan 30, 202634 m14.6°C31 m
Feb 16, 202627 m13.5°C23 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 29, 2025 — seafloor 61 m (measured), deepest dive 52 m (modelled)Dec 29Dec 29, 2025 — seafloor 45 m (measured), deepest dive 28 m (modelled)Dec 29Dec 30, 2025 — seafloor 46 m (measured), deepest dive 25 m (modelled)Dec 30Dec 30, 2025 — seafloor 62 m (measured), deepest dive 52 m (modelled)Dec 30Jan 12, 2026 — seafloor 38 m (measured), deepest dive 32 m (modelled)Jan 12Jan 14, 2026 — seafloor 37 m (measured), deepest dive 32 m (modelled)Jan 14Jan 17, 2026 — seafloor 85 m (measured), deepest dive 56 m (modelled)Jan 17Jan 26, 2026 — seafloor 57 m (measured), deepest dive 34 m (modelled)Jan 26Jan 29, 2026 — seafloor 64 m (measured), deepest dive 27 m (modelled)Jan 29Jan 30, 2026 — seafloor 34 m (measured), deepest dive 31 m (modelled)Jan 30Feb 16, 2026 — seafloor 27 m (measured), deepest dive 23 m (modelled)Feb 16

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

Dives

56 m
Deepest dive
2:31
Longest dive
133
Dives
18 m
Avg dive depth
11
Sightings
49
Days first → last

Dive metrics are modelled within real depth limits — not measured

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Dive profile

modelled
05010056 mstartdive sequence (illustrative)

Depth shaped by the seafloor limit here (85 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 17, 2026

measured
Seafloor depth
85 m
Sea-surface temperature
14.1°C
Distance from shore
7.0 km

Across the residency · 11 sightings

measured
Seafloor depth
27 m – 85 m
Sea-surface temperature
13.5°C – 15.7°C
Distance from shore
1.0 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 11 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.