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

2025-2026 calf of Rumi – Residency

5th sighting in Au'au Channel
Fluke of 2025-2026 calf of Rumi
2025-2026 calf of Rumi Confirmed in the catalog @149438
Nov 13 – Dec 7, 2025 · Au'au Channel

Au'au Channel · Nov – Dec 2025

59 m
Deepest dive
2:34
Longest dive
57
Dives
Sightings
5
Days between first and last sighting
24
Deepest dive on record
59 m · this residency

Dive stats modelled within real depth limits — not measured

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SightingSeafloorSea tempDeepest dive (modelled)
Nov 13, 202557 m—38 m
Nov 25, 202529 m—18 m
Nov 30, 202588 m—59 m
Dec 4, 202568 m—34 m
Dec 7, 2025103 m—47 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
Nov 13, 2025 — seafloor 57 m (measured), deepest dive 38 m (modelled)Nov 13Nov 25, 2025 — seafloor 29 m (measured), deepest dive 18 m (modelled)Nov 25Nov 30, 2025 — seafloor 88 m (measured), deepest dive 59 m (modelled)Nov 30Dec 4, 2025 — seafloor 68 m (measured), deepest dive 34 m (modelled)Dec 4Dec 7, 2025 — seafloor 103 m (measured), deepest dive 47 m (modelled)Dec 7

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

Dives

59 m
Deepest dive
2:34
Longest dive
57
Dives
18 m
Avg dive depth
5
Sightings
24
Days first → last

Dive metrics are modelled within real depth limits — not measured

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Dive profile

modelled
05010059 mstartdive sequence (illustrative)

Depth shaped by the seafloor limit here (88 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 · Nov 30, 2025

measured
Seafloor depth
88 m
Sea-surface temperature
—
Distance from shore
6.0 km

Across the residency · 5 sightings

measured
Seafloor depth
29 m – 103 m
Sea-surface temperature
—
Distance from shore
2.0 km – 7.0 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 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.