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

Graze – Residency

4th sighting in Au'au Channel
Fluke of Graze
Graze Confirmed in the catalog @5382
Mar 11 – 24, 2023 · Au'au Channel

Au'au Channel · Mar 2023

40 m
Deepest dive
1:49
Longest dive
45
Dives
Sightings
3
Days between first and last sighting
14

Dive stats modelled within real depth limits — not measured

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SightingSeafloorSea tempDeepest dive (modelled)
Mar 11, 2023186 m—39 m
Mar 19, 202327 m—24 m
Mar 24, 202349 m—40 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
Mar 11, 2023 — seafloor 186 m (measured), deepest dive 39 m (modelled)Mar 11Mar 19, 2023 — seafloor 27 m (measured), deepest dive 24 m (modelled)Mar 19Mar 24, 2023 — seafloor 49 m (measured), deepest dive 40 m (modelled)Mar 24

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

Dives

40 m
Deepest dive
1:49
Longest dive
45
Dives
16 m
Avg dive depth
3
Sightings
14
Days first → last

Dive metrics are modelled within real depth limits — not measured

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Dive profile

modelled
0255040 mstartdive sequence (illustrative)

Depth shaped by the seafloor limit here (49 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 24, 2023

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

Across the residency · 3 sightings

measured
Seafloor depth
27 m – 186 m
Sea-surface temperature
—
Distance from shore
2.0 km – 12.0 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 3 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.