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

HW-MN0440138 – Residency

10th sighting in Au'au Channel
Fluke of HW-MN0440138
HW-MN0440138 Confirmed in the catalog @12957
Feb 8 – 26, 2025 · Au'au Channel

Au'au Channel · Feb 2025

46 m
Deepest dive
1:39
Longest dive
51
Dives
Sightings
4
Days between first and last sighting
18

Dive stats modelled within real depth limits — not measured

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SightingSeafloorSea tempDeepest dive (modelled)
Feb 8, 202568 m—34 m
Feb 17, 202516 m—14 m
Feb 17, 202516 m—15 m
Feb 26, 202552 m—46 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 8, 2025 — seafloor 68 m (measured), deepest dive 34 m (modelled)Feb 8Feb 17, 2025 — seafloor 16 m (measured), deepest dive 14 m (modelled)Feb 17Feb 17, 2025 — seafloor 16 m (measured), deepest dive 15 m (modelled)Feb 17Feb 26, 2025 — seafloor 52 m (measured), deepest dive 46 m (modelled)Feb 26

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

Dives

46 m
Deepest dive
1:39
Longest dive
51
Dives
14 m
Avg dive depth
4
Sightings
18
Days first → last

Dive metrics are modelled within real depth limits — not measured

Get actual dive data with Risa Deep →

Dive profile

modelled
0255046 mstartdive sequence (illustrative)

Depth shaped by the seafloor limit here (52 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 · Feb 26, 2025

measured
Seafloor depth
52 m
Sea-surface temperature
—
Distance from shore
3.0 km

Across the residency · 4 sightings

measured
Seafloor depth
16 m – 68 m
Sea-surface temperature
—
Distance from shore
3.0 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.