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

HW-MN0440423 – Residency

10th sighting in Au'au Channel
Fluke of HW-MN0440423
HW-MN0440423 Confirmed in the catalog @14438
Feb 22 – Mar 22, 2026 · Au'au Channel

Au'au Channel · Feb – Mar 2026

58 m
Deepest dive
2:14
Longest dive
64
Dives
Sightings
4
Days between first and last sighting
28

Dive stats modelled within real depth limits — not measured

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SightingSeafloorSea tempDeepest dive (modelled)
Feb 22, 202635 m24.4°C31 m
Mar 1, 202673 m24.5°C50 m
Mar 4, 202668 m24.7°C58 m
Mar 22, 202667 m24.6°C55 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
Feb 22, 2026 — seafloor 35 m (measured), deepest dive 31 m (modelled)Feb 22Mar 1, 2026 — seafloor 73 m (measured), deepest dive 50 m (modelled)Mar 1Mar 4, 2026 — seafloor 68 m (measured), deepest dive 58 m (modelled)Mar 4Mar 22, 2026 — seafloor 67 m (measured), deepest dive 55 m (modelled)Mar 22

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

Dives

58 m
Deepest dive
2:14
Longest dive
64
Dives
21 m
Avg dive depth
4
Sightings
28
Days first → last

Dive metrics are modelled within real depth limits — not measured

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Dive profile

modelled
05010058 mstartdive sequence (illustrative)

Depth shaped by the seafloor limit here (68 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 · Mar 4, 2026

measured
Seafloor depth
68 m
Sea-surface temperature
24.7°C
Distance from shore
4.0 km

Across the residency · 4 sightings

measured
Seafloor depth
35 m – 73 m
Sea-surface temperature
24.4°C – 24.7°C
Distance from shore
3.0 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 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.