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

SEAK-5225 – Residency

23rd sighting in Chatham Strait
Fluke of SEAK-5225
SEAK-5225 Confirmed in the catalog @37046
Jun 17 – 28, 2026 · Chatham Strait

Chatham Strait, June Herring Run

Herring balled up thick again this June, and I ate like it.

79 m
Deepest dive
2:41
Longest dive
30
Dives
Sightings
4
Days between first and last sighting
11

Dive stats modelled within real depth limits — not measured

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SightingSeafloorSea tempDeepest dive (modelled)
Jun 17, 202697 m9.8°C75 m
Jun 18, 202643 m9.9°C27 m
Jun 20, 2026111 m11.1°C79 m
Jun 28, 202629 m11.8°C18 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 17, 2026 — seafloor 97 m (measured), deepest dive 75 m (modelled)Jun 17Jun 18, 2026 — seafloor 43 m (measured), deepest dive 27 m (modelled)Jun 18Jun 20, 2026 — seafloor 111 m (measured), deepest dive 79 m (modelled)Jun 20Jun 28, 2026 — seafloor 29 m (measured), deepest dive 18 m (modelled)Jun 28

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

Dives

79 m
Deepest dive
2:41
Longest dive
30
Dives
20 m
Avg dive depth
4
Sightings
11
Days first → last

Dive metrics are modelled within real depth limits — not measured

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Dive profile

modelled
05010079 mstartdive sequence (illustrative)

Depth shaped by the seafloor limit here (111 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 · Jun 20, 2026

measured
Seafloor depth
111 m
Sea-surface temperature
11.1°C
Distance from shore
2.0 km

Across the residency · 4 sightings

measured
Seafloor depth
29 m – 111 m
Sea-surface temperature
9.8°C – 11.8°C
Distance from shore
2.0 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.