Activity map — real sighting points on an OpenStreetMap basemap © OpenStreetMap contributors
Au'au Channel

HW-MN0443516 – Residency

8th sighting in Au'au Channel
Fluke of HW-MN0443516
HW-MN0443516 Confirmed in the catalog @76699
Dec 9, 2025 – Jan 4, 2026 · Au'au Channel

Au'au Channel · Dec 2025 – Jan 2026

63 m
Deepest dive
2:19
Longest dive
18
Dives
Sightings
2
Days between first and last sighting
26
Deepest dive on record
63 m · this residency

Dive stats modelled within real depth limits — not measured

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SightingSeafloorSea tempDeepest dive (modelled)
Dec 9, 202533 m—30 m
Jan 4, 202676 m25.5°C63 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 33 m (measured), deepest dive 30 m (modelled)Dec 9Jan 4, 2026 — seafloor 76 m (measured), deepest dive 63 m (modelled)Jan 4

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

Dives

63 m
Deepest dive
2:19
Longest dive
18
Dives
26 m
Avg dive depth
2
Sightings
26
Days first → last

Dive metrics are modelled within real depth limits — not measured

Get actual dive data with Risa Deep →

Dive profile

modelled
05010063 mstartdive sequence (illustrative)

Depth shaped by the seafloor limit here (76 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 · Jan 4, 2026

measured
Seafloor depth
76 m
Sea-surface temperature
25.5°C
Distance from shore
6.0 km

Across the residency · 2 sightings

measured
Seafloor depth
33 m – 76 m
Sea-surface temperature
25.5°C
Distance from shore
1.0 km – 6.0 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 2 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.