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

Rosie Finch – Residency

35th sighting in Chatham Strait
Fluke of Rosie Finch
Rosie Finch Confirmed in the catalog @6448
Jul 23 – Aug 24, 2026 · Chatham Strait

Chatham Strait, Herring Season

Cold green water, herring running thick—exactly where I belong right now.

82 m
Deepest dive
2:58
Longest dive
28
Dives
Sightings
2
Days between first and last sighting
32

Dive stats modelled within real depth limits — not measured

Get actual dive data with Risa Deep →
SightingSeafloorSea tempDeepest dive (modelled)
Jul 23, 202623 m13.2°C20 m
Aug 24, 2026138 m14.3°C82 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 23, 2026 — seafloor 23 m (measured), deepest dive 20 m (modelled)Jul 23Aug 24, 2026 — seafloor 138 m (measured), deepest dive 82 m (modelled)Aug 24

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

Dives

82 m
Deepest dive
2:58
Longest dive
28
Dives
22 m
Avg dive depth
2
Sightings
32
Days first → last

Dive metrics are modelled within real depth limits — not measured

Get actual dive data with Risa Deep →

Dive profile

modelled
05010082 mstartdive sequence (illustrative)

Depth shaped by the seafloor limit here (138 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.

Unlock with Risa Deep

Place

Where this happened · Aug 24, 2026

measured
Seafloor depth
138 m
Sea-surface temperature
14.3°C
Distance from shore
1.0 km

Across the residency · 2 sightings

measured
Seafloor depth
23 m – 138 m
Sea-surface temperature
13.2°C – 14.3°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 2 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).

Happywhale runs on donations: support Happywhale →

Breach is an independent project. It is not affiliated with, nor endorsed by, Happywhale or GBIF.