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

SEAK-5477 – Residency

5th sighting in Chatham Strait
Fluke of SEAK-5477
SEAK-5477 Confirmed in the catalog @65415
Jul 24 – Aug 24, 2023 · Chatham Strait

Chatham Strait · Jul – Aug 2023

99 m
Deepest dive
3:16
Longest dive
40
Dives
Sightings
3
Days between first and last sighting
31

Dive stats modelled within real depth limits — not measured

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SightingSeafloorSea tempDeepest dive (modelled)
Jul 24, 2023120 m—59 m
Aug 11, 2023-10 m——
Aug 24, 2023143 m—99 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
Jul 24, 2023 — seafloor 120 m (measured), deepest dive 59 m (modelled)Jul 24Aug 11, 2023 — seafloor -10 m (measured), deepest dive — (modelled)Aug 11Aug 24, 2023 — seafloor 143 m (measured), deepest dive 99 m (modelled)Aug 24

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

Dives

99 m
Deepest dive
3:16
Longest dive
40
Dives
28 m
Avg dive depth
3
Sightings
31
Days first → last

Dive metrics are modelled within real depth limits — not measured

Get actual dive data with Risa Deep →

Dive profile

modelled
05010099 mstartdive sequence (illustrative)

Depth shaped by the seafloor limit here (143 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 · Aug 24, 2023

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

Across the residency · 3 sightings

measured
Seafloor depth
-10 m – 143 m
Sea-surface temperature
—
Distance from shore
3.0 km – 8.0 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.