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

HW-MN0804346 – Residency

5th sighting in South Africa
Fluke of HW-MN0804346
HW-MN0804346 Confirmed in the catalog @128603
Nov 17, 2024 – Mar 28, 2025 · South Africa

South Africa · Nov 2024 – Mar 2025

70 m
Deepest dive
3:00
Longest dive
66
Dives
Sightings
5
Days between first and last sighting
131
Deepest dive on record
70 m · this residency

Dive stats modelled within real depth limits — not measured

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SightingSeafloorSea tempDeepest dive (modelled)
Nov 17, 202474 m—52 m
Dec 7, 202459 m—51 m
Dec 12, 202448 m—28 m
Jan 5, 202584 m—70 m
Mar 28, 202594 m—37 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 17, 2024 — seafloor 74 m (measured), deepest dive 52 m (modelled)Nov 17Dec 7, 2024 — seafloor 59 m (measured), deepest dive 51 m (modelled)Dec 7Dec 12, 2024 — seafloor 48 m (measured), deepest dive 28 m (modelled)Dec 12Jan 5, 2025 — seafloor 84 m (measured), deepest dive 70 m (modelled)Jan 5Mar 28, 2025 — seafloor 94 m (measured), deepest dive 37 m (modelled)Mar 28

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

Dives

70 m
Deepest dive
3:00
Longest dive
66
Dives
24 m
Avg dive depth
5
Sightings
131
Days first → last

Dive metrics are modelled within real depth limits — not measured

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Dive profile

modelled
05010070 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
48 m – 94 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.