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

HW-MN0804636 – Residency

9th sighting in South Africa
Fluke of HW-MN0804636
HW-MN0804636 Confirmed in the catalog @132773
Dec 17, 2024 – Mar 3, 2025 · South Africa

South Africa · Dec 2024 – Mar 2025

59 m
Deepest dive
2:20
Longest dive
68
Dives
Sightings
9
Days between first and last sighting
76

Dive stats modelled within real depth limits — not measured

Get actual dive data with Risa Deep →
SightingSeafloorSea tempDeepest dive (modelled)
Dec 17, 202470 m—59 m
Jan 13, 202596 m—35 m
Jan 19, 202561 m—42 m
Jan 25, 202569 m—35 m
Feb 19, 202545 m—30 m
Feb 20, 202549 m—38 m
Feb 21, 202567 m—52 m
Mar 2, 202571 m—32 m
Mar 3, 202572 m—44 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
Dec 17, 2024 — seafloor 70 m (measured), deepest dive 59 m (modelled)Dec 17Jan 13, 2025 — seafloor 96 m (measured), deepest dive 35 m (modelled)Jan 13Jan 19, 2025 — seafloor 61 m (measured), deepest dive 42 m (modelled)Jan 19Jan 25, 2025 — seafloor 69 m (measured), deepest dive 35 m (modelled)Jan 25Feb 19, 2025 — seafloor 45 m (measured), deepest dive 30 m (modelled)Feb 19Feb 20, 2025 — seafloor 49 m (measured), deepest dive 38 m (modelled)Feb 20Feb 21, 2025 — seafloor 67 m (measured), deepest dive 52 m (modelled)Feb 21Mar 2, 2025 — seafloor 71 m (measured), deepest dive 32 m (modelled)Mar 2Mar 3, 2025 — seafloor 72 m (measured), deepest dive 44 m (modelled)Mar 3

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

Dives

59 m
Deepest dive
2:20
Longest dive
68
Dives
22 m
Avg dive depth
9
Sightings
76
Days first → last

Dive metrics are modelled within real depth limits — not measured

Get actual dive data with Risa Deep →

Dive profile

modelled
05010059 mstartdive sequence (illustrative)

Depth shaped by the seafloor limit here (70 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 · Dec 17, 2024

measured
Seafloor depth
70 m
Sea-surface temperature
—
Distance from shore
12.0 km

Across the residency · 9 sightings

measured
Seafloor depth
45 m – 96 m
Sea-surface temperature
—
Distance from shore
3.0 km – 12.0 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 9 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.