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

HW-MN0805151 – Residency

16th sighting in South Africa
Fluke of HW-MN0805151
HW-MN0805151 Confirmed in the catalog @141759
Nov 24, 2025 – Jan 30, 2026 · South Africa

South Africa · Nov 2025 – Jan 2026

87 m
Deepest dive
4:02
Longest dive
170
Dives
Sightings
15
Days between first and last sighting
67
Deepest dive on record
87 m · this residency

Dive stats modelled within real depth limits — not measured

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SightingSeafloorSea tempDeepest dive (modelled)
Nov 24, 202538 m—21 m
Nov 25, 202527 m—17 m
Nov 25, 202552 m—28 m
Dec 11, 202537 m—27 m
Dec 11, 202574 m—54 m
Dec 23, 202522 m—19 m
Dec 30, 202582 m—68 m
Jan 5, 202682 m14.8°C29 m
Jan 5, 202665 m14.8°C36 m
Jan 6, 202693 m15.2°C22 m
Jan 26, 202674 m14.2°C48 m
Jan 27, 202699 m16.4°C87 m
Jan 27, 202699 m16.4°C83 m
Jan 29, 202664 m14.7°C52 m
Jan 30, 202634 m14.6°C30 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 24, 2025 — seafloor 38 m (measured), deepest dive 21 m (modelled)Nov 24Nov 25, 2025 — seafloor 27 m (measured), deepest dive 17 m (modelled)Nov 25, 2025 — seafloor 52 m (measured), deepest dive 28 m (modelled)Dec 11, 2025 — seafloor 37 m (measured), deepest dive 27 m (modelled)Dec 11Dec 11, 2025 — seafloor 74 m (measured), deepest dive 54 m (modelled)Dec 23, 2025 — seafloor 22 m (measured), deepest dive 19 m (modelled)Dec 30, 2025 — seafloor 82 m (measured), deepest dive 68 m (modelled)Dec 30Jan 5, 2026 — seafloor 82 m (measured), deepest dive 29 m (modelled)Jan 5, 2026 — seafloor 65 m (measured), deepest dive 36 m (modelled)Jan 6, 2026 — seafloor 93 m (measured), deepest dive 22 m (modelled)Jan 6Jan 26, 2026 — seafloor 74 m (measured), deepest dive 48 m (modelled)Jan 27, 2026 — seafloor 99 m (measured), deepest dive 87 m (modelled)Jan 27, 2026 — seafloor 99 m (measured), deepest dive 83 m (modelled)Jan 27Jan 29, 2026 — seafloor 64 m (measured), deepest dive 52 m (modelled)Jan 30, 2026 — seafloor 34 m (measured), deepest dive 30 m (modelled)

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

Dives

87 m
Deepest dive
4:02
Longest dive
170
Dives
20 m
Avg dive depth
15
Sightings
67
Days first → last

Dive metrics are modelled within real depth limits — not measured

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Dive profile

modelled
05010087 mstartdive sequence (illustrative)

Depth shaped by the seafloor limit here (99 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 27, 2026

measured
Seafloor depth
99 m
Sea-surface temperature
16.4°C
Distance from shore
11.0 km

Across the residency · 15 sightings

measured
Seafloor depth
22 m – 99 m
Sea-surface temperature
14.2°C – 16.4°C
Distance from shore
2.0 km – 12.0 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 15 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.