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Au'au Channel

HI20-0397 – Residency

25th sighting in Au'au Channel
Fluke of HI20-0397
HI20-0397 Confirmed in the catalog @40255
Feb 12 – Mar 31, 2026 · Au'au Channel

The Channel Knows Me

Shallow, bright water, familiar faces watching — where I belong every spring.

116 m
Deepest dive
3:08
Longest dive
107
Dives
Sightings
9
Days between first and last sighting
47
Deepest dive on record
116 m · this residency

Dive stats modelled within real depth limits — not measured

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SightingSeafloorSea tempDeepest dive (modelled)
Feb 12, 202637 m25.0°C27 m
Feb 14, 202622 m24.8°C12 m
Feb 14, 202636 m24.8°C27 m
Feb 14, 202632 m25.0°C26 m
Mar 5, 202625 m24.5°C23 m
Mar 6, 202659 m24.7°C20 m
Mar 6, 202616 m24.5°C14 m
Mar 19, 202616 m24.4°C15 m
Mar 31, 2026139 m24.4°C116 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 12, 2026 — seafloor 37 m (measured), deepest dive 27 m (modelled)Feb 12Feb 14, 2026 — seafloor 22 m (measured), deepest dive 12 m (modelled)Feb 14Feb 14, 2026 — seafloor 36 m (measured), deepest dive 27 m (modelled)Feb 14Feb 14, 2026 — seafloor 32 m (measured), deepest dive 26 m (modelled)Feb 14Mar 5, 2026 — seafloor 25 m (measured), deepest dive 23 m (modelled)Mar 5Mar 6, 2026 — seafloor 59 m (measured), deepest dive 20 m (modelled)Mar 6Mar 6, 2026 — seafloor 16 m (measured), deepest dive 14 m (modelled)Mar 6Mar 19, 2026 — seafloor 16 m (measured), deepest dive 15 m (modelled)Mar 19Mar 31, 2026 — seafloor 139 m (measured), deepest dive 116 m (modelled)Mar 31

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

Dives

116 m
Deepest dive
3:08
Longest dive
107
Dives
14 m
Avg dive depth
9
Sightings
47
Days first → last

Dive metrics are modelled within real depth limits — not measured

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Dive profile

modelled
075150116 mstartdive sequence (illustrative)

Depth shaped by the seafloor limit here (139 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 31, 2026

measured
Seafloor depth
139 m
Sea-surface temperature
24.4°C
Distance from shore
5.0 km

Across the residency · 9 sightings

measured
Seafloor depth
16 m – 139 m
Sea-surface temperature
24.4°C – 25.0°C
Distance from shore
1.0 km – 5.0 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 9 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.