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

HW-MN0804797 – Residency

5th sighting in South Africa
Fluke of HW-MN0804797
HW-MN0804797 Confirmed in the catalog @133030
Jan 5 – Feb 20, 2025 · South Africa

South Africa · Jan – Feb 2025

53 m
Deepest dive
2:27
Longest dive
94
Dives
Sightings
5
Days between first and last sighting
46

Dive stats modelled within real depth limits — not measured

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SightingSeafloorSea tempDeepest dive (modelled)
Jan 5, 202584 m—53 m
Jan 19, 202573 m—50 m
Feb 8, 202556 m—36 m
Feb 12, 202562 m—40 m
Feb 20, 202549 m—42 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 5, 2025 — seafloor 84 m (measured), deepest dive 53 m (modelled)Jan 5Jan 19, 2025 — seafloor 73 m (measured), deepest dive 50 m (modelled)Jan 19Feb 8, 2025 — seafloor 56 m (measured), deepest dive 36 m (modelled)Feb 8Feb 12, 2025 — seafloor 62 m (measured), deepest dive 40 m (modelled)Feb 12Feb 20, 2025 — seafloor 49 m (measured), deepest dive 42 m (modelled)Feb 20

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

Dives

53 m
Deepest dive
2:27
Longest dive
94
Dives
20 m
Avg dive depth
5
Sightings
46
Days first → last

Dive metrics are modelled within real depth limits — not measured

Get actual dive data with Risa Deep →

Dive profile

modelled
05010053 mstartdive sequence (illustrative)

Depth shaped by the seafloor limit here (84 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 5, 2025

measured
Seafloor depth
84 m
Sea-surface temperature
—
Distance from shore
7.0 km

Across the residency · 5 sightings

measured
Seafloor depth
49 m – 84 m
Sea-surface temperature
—
Distance from shore
3.0 km – 7.0 km

Sources: GEBCO seafloor grid · PacIOOS coastline distance

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

Source records

This activity is assembled from 5 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.