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

HW-MN0804946 – Residency

11th sighting in South Africa
Fluke of HW-MN0804946
HW-MN0804946 Confirmed in the catalog @134829
Jan 6 – Feb 25, 2026 · South Africa

South Africa · Jan – Feb 2026

65 m
Deepest dive
2:51
Longest dive
82
Dives
Sightings
6
Days between first and last sighting
50
Deepest dive on record
65 m · this residency

Dive stats modelled within real depth limits — not measured

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SightingSeafloorSea tempDeepest dive (modelled)
Jan 6, 202660 m14.8°C48 m
Feb 7, 202681 m16.8°C65 m
Feb 13, 202668 m16.2°C54 m
Feb 16, 202630 m13.5°C24 m
Feb 18, 202676 m15.8°C62 m
Feb 25, 202666 m17.5°C52 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
Jan 6, 2026 — seafloor 60 m (measured), deepest dive 48 m (modelled)Jan 6Feb 7, 2026 — seafloor 81 m (measured), deepest dive 65 m (modelled)Feb 7Feb 13, 2026 — seafloor 68 m (measured), deepest dive 54 m (modelled)Feb 13Feb 16, 2026 — seafloor 30 m (measured), deepest dive 24 m (modelled)Feb 16Feb 18, 2026 — seafloor 76 m (measured), deepest dive 62 m (modelled)Feb 18Feb 25, 2026 — seafloor 66 m (measured), deepest dive 52 m (modelled)Feb 25

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

Dives

65 m
Deepest dive
2:51
Longest dive
82
Dives
22 m
Avg dive depth
6
Sightings
50
Days first → last

Dive metrics are modelled within real depth limits — not measured

Get actual dive data with Risa Deep →

Dive profile

modelled
05010065 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 · Feb 7, 2026

measured
Seafloor depth
81 m
Sea-surface temperature
16.8°C
Distance from shore
4.0 km

Across the residency · 6 sightings

measured
Seafloor depth
30 m – 81 m
Sea-surface temperature
13.5°C – 17.5°C
Distance from shore
1.0 km – 4.0 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 6 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.