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

Lesser – Residency

14th sighting in Au'au Channel
Fluke of Lesser
Lesser Confirmed in the catalog @6609
Feb 5 – 22, 2025 · Au'au Channel

Au'au Channel · Feb 2025

114 m
Deepest dive
4:35
Longest dive
47
Dives
Sightings
4
Days between first and last sighting
17
Deepest dive on record
114 m · this residency

Dive stats modelled within real depth limits — not measured

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SightingSeafloorSea tempDeepest dive (modelled)
Feb 5, 202542 m25.1°C29 m
Feb 6, 202567 m25.2°C47 m
Feb 17, 202564 m25.6°C52 m
Feb 22, 20251,530 m25.2°C114 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 5, 2025 — seafloor 42 m (measured), deepest dive 29 m (modelled)Feb 5Feb 6, 2025 — seafloor 67 m (measured), deepest dive 47 m (modelled)Feb 6Feb 17, 2025 — seafloor 64 m (measured), deepest dive 52 m (modelled)Feb 17Feb 22, 2025 — seafloor 1,530 m (measured), deepest dive 114 m (modelled)Feb 22

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

Dives

114 m
Deepest dive
4:35
Longest dive
47
Dives
23 m
Avg dive depth
4
Sightings
17
Days first → last

Dive metrics are modelled within real depth limits — not measured

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Dive profile

modelled
075150114 mstartdive sequence (illustrative)

Depth shaped by the seafloor limit here (1,530 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 22, 2025

measured
Seafloor depth
1,530 m
Sea-surface temperature
25.2°C
Distance from shore
6.0 km

Across the residency · 4 sightings

measured
Seafloor depth
42 m – 1,530 m
Sea-surface temperature
25.1°C – 25.6°C
Distance from shore
2.0 km – 6.0 km

Sources: GEBCO seafloor grid · NASA JPL MUR 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.