Activity map — real sighting points on an OpenStreetMap basemap © OpenStreetMap contributors
Chatham Strait

Flash – Residency

28th sighting in Chatham Strait
Fluke of Flash
Flash Confirmed in the catalog @11179
Jun 20 – Jul 21, 2023 · Chatham Strait

Chatham Strait · Jun – Jul 2023

121 m
Deepest dive
4:26
Longest dive
95
Dives
Sightings
6
Days between first and last sighting
31

Dive stats modelled within real depth limits — not measured

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SightingSeafloorSea tempDeepest dive (modelled)
Jun 20, 2023187 m9.7°C109 m
Jul 5, 202391 m11.2°C69 m
Jul 5, 202344 m12.7°C40 m
Jul 6, 2023187 m11.4°C29 m
Jul 19, 2023309 m14.0°C121 m
Jul 21, 202377 m14.7°C59 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
Jun 20, 2023 — seafloor 187 m (measured), deepest dive 109 m (modelled)Jun 20Jul 5, 2023 — seafloor 91 m (measured), deepest dive 69 m (modelled)Jul 5Jul 5, 2023 — seafloor 44 m (measured), deepest dive 40 m (modelled)Jul 5Jul 6, 2023 — seafloor 187 m (measured), deepest dive 29 m (modelled)Jul 6Jul 19, 2023 — seafloor 309 m (measured), deepest dive 121 m (modelled)Jul 19Jul 21, 2023 — seafloor 77 m (measured), deepest dive 59 m (modelled)Jul 21

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

Dives

121 m
Deepest dive
4:26
Longest dive
95
Dives
29 m
Avg dive depth
6
Sightings
31
Days first → last

Dive metrics are modelled within real depth limits — not measured

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Dive profile

modelled
075150121 mstartdive sequence (illustrative)

Depth shaped by the seafloor limit here (309 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 · Jul 19, 2023

measured
Seafloor depth
309 m
Sea-surface temperature
14.0°C
Distance from shore
5.0 km

Across the residency · 6 sightings

measured
Seafloor depth
44 m – 309 m
Sea-surface temperature
9.7°C – 14.7°C
Distance from shore
1.0 km – 5.0 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 6 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.