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

Holokai – Residency

21st sighting in Au'au Channel
Fluke of Holokai
Holokai Confirmed in the catalog @5478
Dec 3, 2025 – Jan 13, 2026 · Au'au Channel

Au'au Channel · Dec 2025 – Jan 2026

81 m
Deepest dive
3:18
Longest dive
53
Dives
Sightings
4
Days between first and last sighting
41

Dive stats modelled within real depth limits — not measured

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SightingSeafloorSea tempDeepest dive (modelled)
Dec 3, 2025178 m26.5°C81 m
Dec 27, 20251,651 m25.9°C71 m
Jan 11, 202659 m25.6°C49 m
Jan 13, 202656 m25.5°C43 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 3, 2025 — seafloor 178 m (measured), deepest dive 81 m (modelled)Dec 3Dec 27, 2025 — seafloor 1,651 m (measured), deepest dive 71 m (modelled)Dec 27Jan 11, 2026 — seafloor 59 m (measured), deepest dive 49 m (modelled)Jan 11Jan 13, 2026 — seafloor 56 m (measured), deepest dive 43 m (modelled)Jan 13

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

Dives

81 m
Deepest dive
3:18
Longest dive
53
Dives
22 m
Avg dive depth
4
Sightings
41
Days first → last

Dive metrics are modelled within real depth limits — not measured

Get actual dive data with Risa Deep →

Dive profile

modelled
05010081 mstartdive sequence (illustrative)

Depth shaped by the seafloor limit here (178 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 3, 2025

measured
Seafloor depth
178 m
Sea-surface temperature
26.5°C
Distance from shore
8.0 km

Across the residency · 4 sightings

measured
Seafloor depth
56 m – 1,651 m
Sea-surface temperature
25.5°C – 26.5°C
Distance from shore
3.0 km – 8.0 km

Sources: GEBCO seafloor grid · NASA JPL MUR sea temperature · PacIOOS coastline distance

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

Source records

This activity is assembled from 4 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.