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

чст – Residency

9th sighting in Au'au Channel
Fluke of чст
чст Confirmed in the catalog @13782
Feb 4 – Apr 1, 2026 · Au'au Channel

Calf Number Two, Same Shallows

Brought another little one to my calm bright water — she's steady already.

126 m
Deepest dive
4:01
Longest dive
76
Dives
Sightings
5
Days between first and last sighting
56

Dive stats modelled within real depth limits — not measured

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SightingSeafloorSea tempDeepest dive (modelled)
Feb 4, 202642 m25.4°C33 m
Feb 13, 20261,254 m25.2°C96 m
Feb 22, 202649 m24.6°C44 m
Mar 19, 202616 m24.4°C15 m
Apr 1, 2026168 m24.4°C126 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 4, 2026 — seafloor 42 m (measured), deepest dive 33 m (modelled)Feb 4Feb 13, 2026 — seafloor 1,254 m (measured), deepest dive 96 m (modelled)Feb 13Feb 22, 2026 — seafloor 49 m (measured), deepest dive 44 m (modelled)Feb 22Mar 19, 2026 — seafloor 16 m (measured), deepest dive 15 m (modelled)Mar 19Apr 1, 2026 — seafloor 168 m (measured), deepest dive 126 m (modelled)Apr 1

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

Dives

126 m
Deepest dive
4:01
Longest dive
76
Dives
20 m
Avg dive depth
5
Sightings
56
Days first → last

Dive metrics are modelled within real depth limits — not measured

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Dive profile

modelled
075150126 mstartdive sequence (illustrative)

Depth shaped by the seafloor limit here (168 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 · Apr 1, 2026

measured
Seafloor depth
168 m
Sea-surface temperature
24.4°C
Distance from shore
8.0 km

Across the residency · 5 sightings

measured
Seafloor depth
16 m – 1,254 m
Sea-surface temperature
24.4°C – 25.4°C
Distance from shore
2.0 km – 8.0 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 5 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.