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

Agaric – Residency

4th sighting in Chatham Strait
Fluke of Agaric
Agaric Confirmed in the catalog @19858
Jul 30 – Oct 3, 2026 · Chatham Strait

Strait Days, Herring Ways

Cedar shoreline, herring running thick—Chatham knows my name by now.

165 m
Deepest dive
5:07
Longest dive
75
Dives
Sightings
4
Days between first and last sighting
65
Deepest dive on record
165 m · this residency

Dive stats modelled within real depth limits — not measured

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SightingSeafloorSea tempDeepest dive (modelled)
Jul 30, 2026219 m13.2°C165 m
Aug 24, 2026138 m14.3°C73 m
Sep 24, 2026231 m10.6°C123 m
Oct 3, 2026190 m10.3°C93 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 30, 2026 — seafloor 219 m (measured), deepest dive 165 m (modelled)Jul 30Aug 24, 2026 — seafloor 138 m (measured), deepest dive 73 m (modelled)Aug 24Sep 24, 2026 — seafloor 231 m (measured), deepest dive 123 m (modelled)Sep 24Oct 3, 2026 — seafloor 190 m (measured), deepest dive 93 m (modelled)Oct 3

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

Dives

165 m
Deepest dive
5:07
Longest dive
75
Dives
32 m
Avg dive depth
4
Sightings
65
Days first → last

Dive metrics are modelled within real depth limits — not measured

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Dive profile

modelled
0100200165 mstartdive sequence (illustrative)

Depth shaped by the seafloor limit here (219 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 30, 2026

measured
Seafloor depth
219 m
Sea-surface temperature
13.2°C
Distance from shore
5.0 km

Across the residency · 4 sightings

measured
Seafloor depth
138 m – 231 m
Sea-surface temperature
10.3°C – 14.3°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 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.