Risa
Try Deep freeDeep
Risa
Try Deep freeDeep
Activity map — real sighting points on an OpenStreetMap basemap © OpenStreetMap contributors
South Africa

HW-MN0804847 – Residency

13th sighting in South Africa
Fluke of HW-MN0804847
HW-MN0804847 Confirmed in the catalog @133312
Oct 26, 2025 – Jan 6, 2026 · South Africa

South Africa · Oct 2025 – Jan 2026

64 m
Deepest dive
2:38
Longest dive
148
Dives
Sightings
10
Days between first and last sighting
72
Deepest dive on record
64 m · this residency

Dive stats modelled within real depth limits — not measured

Get actual dive data with Risa Deep →
SightingSeafloorSea tempDeepest dive (modelled)
Oct 26, 202593 m—64 m
Nov 13, 202560 m—31 m
Dec 9, 202545 m—40 m
Dec 11, 202537 m—32 m
Dec 29, 202561 m—49 m
Dec 29, 202545 m—36 m
Dec 30, 202562 m—44 m
Dec 30, 202546 m—39 m
Jan 5, 202682 m14.8°C52 m
Jan 6, 202693 m15.2°C64 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
Oct 26, 2025 — seafloor 93 m (measured), deepest dive 64 m (modelled)Oct 26Nov 13, 2025 — seafloor 60 m (measured), deepest dive 31 m (modelled)Nov 13Dec 9, 2025 — seafloor 45 m (measured), deepest dive 40 m (modelled)Dec 9Dec 11, 2025 — seafloor 37 m (measured), deepest dive 32 m (modelled)Dec 11Dec 29, 2025 — seafloor 61 m (measured), deepest dive 49 m (modelled)Dec 29Dec 29, 2025 — seafloor 45 m (measured), deepest dive 36 m (modelled)Dec 29Dec 30, 2025 — seafloor 62 m (measured), deepest dive 44 m (modelled)Dec 30Dec 30, 2025 — seafloor 46 m (measured), deepest dive 39 m (modelled)Dec 30Jan 5, 2026 — seafloor 82 m (measured), deepest dive 52 m (modelled)Jan 5Jan 6, 2026 — seafloor 93 m (measured), deepest dive 64 m (modelled)Jan 6

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

Dives

64 m
Deepest dive
2:38
Longest dive
148
Dives
20 m
Avg dive depth
10
Sightings
72
Days first → last

Dive metrics are modelled within real depth limits — not measured

Get actual dive data with Risa Deep →

Dive profile

modelled
05010064 mstartdive sequence (illustrative)

Depth shaped by the seafloor limit here (93 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.

Unlock with Risa Deep

Place

Where this happened · Oct 26, 2025

measured
Seafloor depth
93 m
Sea-surface temperature
—
Distance from shore
5.0 km

Across the residency · 10 sightings

measured
Seafloor depth
37 m – 93 m
Sea-surface temperature
14.8°C – 15.2°C
Distance from shore
2.0 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 10 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).

Happywhale runs on donations: support Happywhale →

Breach is an independent project. It is not affiliated with, nor endorsed by, Happywhale or GBIF.