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

HW-MN0804778 – Residency

15th sighting in South Africa
Fluke of HW-MN0804778
HW-MN0804778 Confirmed in the catalog @132985
Nov 22, 2025 – Jan 14, 2026 · South Africa

South Africa · Nov 2025 – Jan 2026

56 m
Deepest dive
3:17
Longest dive
141
Dives
Sightings
11
Days between first and last sighting
53

Dive stats modelled within real depth limits — not measured

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SightingSeafloorSea tempDeepest dive (modelled)
Nov 22, 20259 m—8 m
Nov 25, 202557 m—49 m
Dec 4, 202554 m—41 m
Dec 9, 202517 m—12 m
Dec 27, 202562 m—53 m
Dec 28, 202581 m—56 m
Dec 29, 202561 m—43 m
Dec 29, 202545 m—39 m
Dec 30, 202561 m—51 m
Dec 30, 202546 m—34 m
Jan 14, 202637 m15.7°C22 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 22, 2025 — seafloor 9 m (measured), deepest dive 8 m (modelled)Nov 22Nov 25, 2025 — seafloor 57 m (measured), deepest dive 49 m (modelled)Nov 25Dec 4, 2025 — seafloor 54 m (measured), deepest dive 41 m (modelled)Dec 4Dec 9, 2025 — seafloor 17 m (measured), deepest dive 12 m (modelled)Dec 9Dec 27, 2025 — seafloor 62 m (measured), deepest dive 53 m (modelled)Dec 27Dec 28, 2025 — seafloor 81 m (measured), deepest dive 56 m (modelled)Dec 28Dec 29, 2025 — seafloor 61 m (measured), deepest dive 43 m (modelled)Dec 29Dec 29, 2025 — seafloor 45 m (measured), deepest dive 39 m (modelled)Dec 29Dec 30, 2025 — seafloor 61 m (measured), deepest dive 51 m (modelled)Dec 30Dec 30, 2025 — seafloor 46 m (measured), deepest dive 34 m (modelled)Dec 30Jan 14, 2026 — seafloor 37 m (measured), deepest dive 22 m (modelled)Jan 14

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

Dives

56 m
Deepest dive
3:17
Longest dive
141
Dives
17 m
Avg dive depth
11
Sightings
53
Days first → last

Dive metrics are modelled within real depth limits — not measured

Get actual dive data with Risa Deep →

Dive profile

modelled
05010056 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 · Dec 28, 2025

measured
Seafloor depth
81 m
Sea-surface temperature
—
Distance from shore
10.0 km

Across the residency · 11 sightings

measured
Seafloor depth
9 m – 81 m
Sea-surface temperature
15.7°C
Distance from shore
1.0 km – 10.0 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 11 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.