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

HW-MN0804357 – Residency

5th sighting in South Africa
Fluke of HW-MN0804357
HW-MN0804357 Confirmed in the catalog @129050
Nov 7, 2024 – Feb 20, 2025 · South Africa

South Africa · Nov 2024 – Feb 2025

43 m
Deepest dive
2:12
Longest dive
61
Dives
Sightings
5
Days between first and last sighting
105

Dive stats modelled within real depth limits — not measured

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SightingSeafloorSea tempDeepest dive (modelled)
Nov 7, 202455 m—32 m
Nov 25, 202453 m—43 m
Dec 28, 202452 m—35 m
Jan 4, 2025-6 m——
Feb 20, 202549 m—41 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 7, 2024 — seafloor 55 m (measured), deepest dive 32 m (modelled)Nov 7Nov 25, 2024 — seafloor 53 m (measured), deepest dive 43 m (modelled)Nov 25Dec 28, 2024 — seafloor 52 m (measured), deepest dive 35 m (modelled)Dec 28Jan 4, 2025 — seafloor -6 m (measured), deepest dive — (modelled)Jan 4Feb 20, 2025 — seafloor 49 m (measured), deepest dive 41 m (modelled)Feb 20

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

Dives

43 m
Deepest dive
2:12
Longest dive
61
Dives
18 m
Avg dive depth
5
Sightings
105
Days first → last

Dive metrics are modelled within real depth limits — not measured

Get actual dive data with Risa Deep →

Dive profile

modelled
0255043 mstartdive sequence (illustrative)

Depth shaped by the seafloor limit here (53 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 · Nov 25, 2024

measured
Seafloor depth
53 m
Sea-surface temperature
—
Distance from shore
3.0 km

Across the residency · 5 sightings

measured
Seafloor depth
-6 m – 55 m
Sea-surface temperature
—
Distance from shore
2.0 km – 3.0 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.