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

HW-MN0443778 – Residency

6th sighting in Au'au Channel
Fluke of HW-MN0443778
HW-MN0443778 Confirmed in the catalog @82973
Feb 20 – Mar 11, 2025 · Au'au Channel

Au'au Channel · Feb – Mar 2025

71 m
Deepest dive
3:17
Longest dive
55
Dives
Sightings
4
Days between first and last sighting
19
Deepest dive on record
71 m · this residency

Dive stats modelled within real depth limits — not measured

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SightingSeafloorSea tempDeepest dive (modelled)
Feb 20, 2025421 m—60 m
Mar 6, 2025-2 m——
Mar 10, 202561 m—48 m
Mar 11, 2025340 m—71 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 20, 2025 — seafloor 421 m (measured), deepest dive 60 m (modelled)Feb 20Mar 6, 2025 — seafloor -2 m (measured), deepest dive — (modelled)Mar 6Mar 10, 2025 — seafloor 61 m (measured), deepest dive 48 m (modelled)Mar 10Mar 11, 2025 — seafloor 340 m (measured), deepest dive 71 m (modelled)Mar 11

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

Dives

71 m
Deepest dive
3:17
Longest dive
55
Dives
23 m
Avg dive depth
4
Sightings
19
Days first → last

Dive metrics are modelled within real depth limits — not measured

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Dive profile

modelled
05010071 mstartdive sequence (illustrative)

Depth shaped by the seafloor limit here (340 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 11, 2025

measured
Seafloor depth
340 m
Sea-surface temperature
—
Distance from shore
5.0 km

Across the residency · 4 sightings

measured
Seafloor depth
-2 m – 421 m
Sea-surface temperature
—
Distance from shore
3.0 km – 5.0 km

Sources: GEBCO seafloor grid · 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.