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

HW-MN0805556 – Residency

13th sighting in South Africa
Fluke of HW-MN0805556
HW-MN0805556 Confirmed in the catalog @148150
Nov 13, 2025 – Jan 7, 2026 · South Africa

South Africa · Nov 2025 – Jan 2026

83 m
Deepest dive
2:48
Longest dive
159
Dives
Sightings
13
Days between first and last sighting
55
Deepest dive on record
83 m · this residency

Dive stats modelled within real depth limits — not measured

Get actual dive data with Risa Deep →
SightingSeafloorSea tempDeepest dive (modelled)
Nov 13, 202558 m—26 m
Nov 24, 202538 m—26 m
Nov 25, 202552 m—40 m
Nov 25, 202564 m—49 m
Dec 27, 202561 m—47 m
Dec 29, 202561 m—49 m
Dec 29, 202545 m—39 m
Dec 30, 202546 m—36 m
Jan 5, 202682 m14.8°C47 m
Jan 5, 202663 m14.8°C40 m
Jan 5, 202665 m14.8°C39 m
Jan 6, 202693 m15.2°C45 m
Jan 7, 202692 m17.5°C83 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 13, 2025 — seafloor 58 m (measured), deepest dive 26 m (modelled)Nov 13Nov 24, 2025 — seafloor 38 m (measured), deepest dive 26 m (modelled)Nov 25, 2025 — seafloor 52 m (measured), deepest dive 40 m (modelled)Nov 25, 2025 — seafloor 64 m (measured), deepest dive 49 m (modelled)Nov 25Dec 27, 2025 — seafloor 61 m (measured), deepest dive 47 m (modelled)Dec 29, 2025 — seafloor 61 m (measured), deepest dive 49 m (modelled)Dec 29, 2025 — seafloor 45 m (measured), deepest dive 39 m (modelled)Dec 29Dec 30, 2025 — seafloor 46 m (measured), deepest dive 36 m (modelled)Jan 5, 2026 — seafloor 82 m (measured), deepest dive 47 m (modelled)Jan 5, 2026 — seafloor 63 m (measured), deepest dive 40 m (modelled)Jan 5Jan 5, 2026 — seafloor 65 m (measured), deepest dive 39 m (modelled)Jan 6, 2026 — seafloor 93 m (measured), deepest dive 45 m (modelled)Jan 7, 2026 — seafloor 92 m (measured), deepest dive 83 m (modelled)Jan 7

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

Dives

83 m
Deepest dive
2:48
Longest dive
159
Dives
19 m
Avg dive depth
13
Sightings
55
Days first → last

Dive metrics are modelled within real depth limits — not measured

Get actual dive data with Risa Deep →

Dive profile

modelled
05010083 mstartdive sequence (illustrative)

Depth shaped by the seafloor limit here (92 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 · Jan 7, 2026

measured
Seafloor depth
92 m
Sea-surface temperature
17.5°C
Distance from shore
5.0 km

Across the residency · 13 sightings

measured
Seafloor depth
38 m – 93 m
Sea-surface temperature
14.8°C – 17.5°C
Distance from shore
2.0 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 13 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.