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

HW-MN0805664 – Residency

10th sighting in South Africa
Fluke of HW-MN0805664
HW-MN0805664 Confirmed in the catalog @149605
Dec 9, 2025 – Feb 7, 2026 · South Africa

South Africa · Dec 2025 – Feb 2026

65 m
Deepest dive
2:50
Longest dive
83
Dives
Sightings
10
Days between first and last sighting
60
Deepest dive on record
65 m · this residency

Dive stats modelled within real depth limits — not measured

Get actual dive data with Risa Deep →
SightingSeafloorSea tempDeepest dive (modelled)
Dec 9, 202517 m—13 m
Dec 9, 202517 m—15 m
Dec 10, 202548 m—38 m
Dec 27, 202562 m—38 m
Dec 28, 202581 m—37 m
Dec 28, 202561 m—52 m
Dec 29, 202545 m—27 m
Jan 17, 202663 m17.9°C57 m
Jan 18, 202673 m18.2°C48 m
Feb 7, 202681 m16.8°C65 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 9, 2025 — seafloor 17 m (measured), deepest dive 13 m (modelled)Dec 9Dec 9, 2025 — seafloor 17 m (measured), deepest dive 15 m (modelled)Dec 9Dec 10, 2025 — seafloor 48 m (measured), deepest dive 38 m (modelled)Dec 10Dec 27, 2025 — seafloor 62 m (measured), deepest dive 38 m (modelled)Dec 27Dec 28, 2025 — seafloor 81 m (measured), deepest dive 37 m (modelled)Dec 28Dec 28, 2025 — seafloor 61 m (measured), deepest dive 52 m (modelled)Dec 28Dec 29, 2025 — seafloor 45 m (measured), deepest dive 27 m (modelled)Dec 29Jan 17, 2026 — seafloor 63 m (measured), deepest dive 57 m (modelled)Jan 17Jan 18, 2026 — seafloor 73 m (measured), deepest dive 48 m (modelled)Jan 18Feb 7, 2026 — seafloor 81 m (measured), deepest dive 65 m (modelled)Feb 7

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

Dives

65 m
Deepest dive
2:50
Longest dive
83
Dives
18 m
Avg dive depth
10
Sightings
60
Days first → last

Dive metrics are modelled within real depth limits — not measured

Get actual dive data with Risa Deep →

Dive profile

modelled
05010065 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.

Unlock with Risa Deep

Place

Where this happened · Feb 7, 2026

measured
Seafloor depth
81 m
Sea-surface temperature
16.8°C
Distance from shore
4.0 km

Across the residency · 10 sightings

measured
Seafloor depth
17 m – 81 m
Sea-surface temperature
16.8°C – 18.2°C
Distance from shore
1.0 km – 10.0 km

Sources: GEBCO seafloor grid · NOAA OISST sea temperature · 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.