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

HW-MN0804977 – Residency

15th sighting in South Africa
Fluke of HW-MN0804977
HW-MN0804977 Confirmed in the catalog @135720
Nov 10, 2025 – Feb 17, 2026 · South Africa

South Africa · Nov 2025 – Feb 2026

71 m
Deepest dive
3:57
Longest dive
171
Dives
Sightings
13
Days between first and last sighting
98
Deepest dive on record
71 m · this residency

Dive stats modelled within real depth limits — not measured

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SightingSeafloorSea tempDeepest dive (modelled)
Nov 10, 202550 m—46 m
Nov 25, 202564 m—45 m
Nov 25, 202561 m—37 m
Dec 27, 202562 m—45 m
Dec 29, 20253 m—3 m
Dec 29, 202561 m—44 m
Dec 30, 202538 m—33 m
Dec 31, 202545 m—32 m
Jan 26, 202669 m14.3°C47 m
Jan 27, 202699 m16.4°C71 m
Feb 7, 202681 m16.8°C52 m
Feb 16, 202630 m13.5°C23 m
Feb 17, 202662 m15.9°C54 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 10, 2025 — seafloor 50 m (measured), deepest dive 46 m (modelled)Nov 10Nov 25, 2025 — seafloor 64 m (measured), deepest dive 45 m (modelled)Nov 25, 2025 — seafloor 61 m (measured), deepest dive 37 m (modelled)Dec 27, 2025 — seafloor 62 m (measured), deepest dive 45 m (modelled)Dec 27Dec 29, 2025 — seafloor 3 m (measured), deepest dive 3 m (modelled)Dec 29, 2025 — seafloor 61 m (measured), deepest dive 44 m (modelled)Dec 30, 2025 — seafloor 38 m (measured), deepest dive 33 m (modelled)Dec 30Dec 31, 2025 — seafloor 45 m (measured), deepest dive 32 m (modelled)Jan 26, 2026 — seafloor 69 m (measured), deepest dive 47 m (modelled)Jan 27, 2026 — seafloor 99 m (measured), deepest dive 71 m (modelled)Jan 27Feb 7, 2026 — seafloor 81 m (measured), deepest dive 52 m (modelled)Feb 16, 2026 — seafloor 30 m (measured), deepest dive 23 m (modelled)Feb 17, 2026 — seafloor 62 m (measured), deepest dive 54 m (modelled)Feb 17

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

Dives

71 m
Deepest dive
3:57
Longest dive
171
Dives
19 m
Avg dive depth
13
Sightings
98
Days first → last

Dive metrics are modelled within real depth limits — not measured

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Dive profile

modelled
05010071 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 · 13 sightings

measured
Seafloor depth
3 m – 99 m
Sea-surface temperature
13.5°C – 16.8°C
Distance from shore
1.0 km – 11.0 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 13 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.