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South Africa

HW-MN0805848 – Residency

11th sighting in South Africa
Fluke of HW-MN0805848
HW-MN0805848 Confirmed in the catalog @150523
Dec 31, 2025 – Mar 11, 2026 · South Africa

South Africa · Dec 2025 – Mar 2026

56 m
Deepest dive
2:17
Longest dive
147
Dives
Sightings
11
Days between first and last sighting
69
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 31, 202586 m15.1°C56 m
Jan 17, 202658 m17.9°C46 m
Jan 18, 202673 m18.2°C51 m
Feb 4, 202620 m16.1°C15 m
Feb 5, 202647 m16.1°C40 m
Feb 7, 202650 m15.5°C38 m
Feb 11, 202619 m15.1°C17 m
Feb 16, 20268 m13.1°C6 m
Feb 18, 202628 m15.1°C26 m
Feb 20, 202615 m15.8°C13 m
Mar 11, 20265 m17.8°C5 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 31, 2025 — seafloor 86 m (measured), deepest dive 56 m (modelled)Dec 31Jan 17, 2026 — seafloor 58 m (measured), deepest dive 46 m (modelled)Jan 17Jan 18, 2026 — seafloor 73 m (measured), deepest dive 51 m (modelled)Jan 18Feb 4, 2026 — seafloor 20 m (measured), deepest dive 15 m (modelled)Feb 4Feb 5, 2026 — seafloor 47 m (measured), deepest dive 40 m (modelled)Feb 5Feb 7, 2026 — seafloor 50 m (measured), deepest dive 38 m (modelled)Feb 7Feb 11, 2026 — seafloor 19 m (measured), deepest dive 17 m (modelled)Feb 11Feb 16, 2026 — seafloor 8 m (measured), deepest dive 6 m (modelled)Feb 16Feb 18, 2026 — seafloor 28 m (measured), deepest dive 26 m (modelled)Feb 18Feb 20, 2026 — seafloor 15 m (measured), deepest dive 13 m (modelled)Feb 20Mar 11, 2026 — seafloor 5 m (measured), deepest dive 5 m (modelled)Mar 11

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

Dives

56 m
Deepest dive
2:17
Longest dive
147
Dives
15 m
Avg dive depth
11
Sightings
69
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 (86 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
86 m
Sea-surface temperature
15.1°C
Distance from shore
6.0 km

Across the residency · 11 sightings

measured
Seafloor depth
5 m – 86 m
Sea-surface temperature
13.1°C – 18.2°C
Distance from shore
1.0 km – 6.0 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.