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

HW-MN0401517 – Residency

10th sighting in Clarence Strait
Fluke of HW-MN0401517
HW-MN0401517 Confirmed in the catalog @125660
Aug 10 – 30, 2026 · Clarence Strait

My Own Patch of Cold Water

Herring where they should be, current doing my work for me.

53 m
Deepest dive
2:05
Longest dive
20
Dives
Sightings
3
Days between first and last sighting
20

Dive stats modelled within real depth limits — not measured

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SightingSeafloorSea tempDeepest dive (modelled)
Aug 10, 202675 m14.7°C53 m
Aug 23, 202631 m14.9°C26 m
Aug 30, 202663 m14.2°C20 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
Aug 10, 2026 — seafloor 75 m (measured), deepest dive 53 m (modelled)Aug 10Aug 23, 2026 — seafloor 31 m (measured), deepest dive 26 m (modelled)Aug 23Aug 30, 2026 — seafloor 63 m (measured), deepest dive 20 m (modelled)Aug 30

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

Dives

53 m
Deepest dive
2:05
Longest dive
20
Dives
17 m
Avg dive depth
3
Sightings
20
Days first → last

Dive metrics are modelled within real depth limits — not measured

Get actual dive data with Risa Deep →

Dive profile

modelled
05010053 mstartdive sequence (illustrative)

Depth shaped by the seafloor limit here (75 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 10, 2026

measured
Seafloor depth
75 m
Sea-surface temperature
14.7°C
Distance from shore
1.0 km

Across the residency · 3 sightings

measured
Seafloor depth
31 m – 75 m
Sea-surface temperature
14.2°C – 14.9°C
Distance from shore
1.0 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 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.