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

Spinelli – Residency

4th sighting in Chatham Strait
Fluke of Spinelli
Spinelli Confirmed in the catalog @26044
Jul 26 – Aug 6, 2025 · Chatham Strait

Chatham Strait · Jul – Aug 2025

187 m
Deepest dive
4:33
Longest dive
21
Dives
Sightings
2
Days between first and last sighting
12
Deepest dive on record
187 m · this residency

Dive stats modelled within real depth limits — not measured

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SightingSeafloorSea tempDeepest dive (modelled)
Jul 26, 202588 m12.8°C49 m
Aug 6, 2025550 m13.4°C187 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 26, 2025 — seafloor 88 m (measured), deepest dive 49 m (modelled)Jul 26Aug 6, 2025 — seafloor 550 m (measured), deepest dive 187 m (modelled)Aug 6

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

Dives

187 m
Deepest dive
4:33
Longest dive
21
Dives
27 m
Avg dive depth
2
Sightings
12
Days first → last

Dive metrics are modelled within real depth limits — not measured

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Dive profile

modelled
0100200187 mstartdive sequence (illustrative)

Depth shaped by the seafloor limit here (550 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 6, 2025

measured
Seafloor depth
550 m
Sea-surface temperature
13.4°C
Distance from shore
2.0 km

Across the residency · 2 sightings

measured
Seafloor depth
88 m – 550 m
Sea-surface temperature
12.8°C – 13.4°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 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).

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