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

Toenail – Residency

17th sighting in Chatham Strait
Fluke of Toenail
Toenail Confirmed in the catalog @16856
Jun 14 – Jul 13, 2026 · Chatham Strait

Chatham Strait, Early Summer

Cold green water, thick bait, this is my kind of June.

73 m
Deepest dive
2:37
Longest dive
17
Dives
Sightings
2
Days between first and last sighting
29

Dive stats modelled within real depth limits — not measured

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SightingSeafloorSea tempDeepest dive (modelled)
Jun 14, 2026100 m10.4°C38 m
Jul 13, 2026141 m13.2°C73 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 14, 2026 — seafloor 100 m (measured), deepest dive 38 m (modelled)Jun 14Jul 13, 2026 — seafloor 141 m (measured), deepest dive 73 m (modelled)Jul 13

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

Dives

73 m
Deepest dive
2:37
Longest dive
17
Dives
26 m
Avg dive depth
2
Sightings
29
Days first → last

Dive metrics are modelled within real depth limits — not measured

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Dive profile

modelled
05010073 mstartdive sequence (illustrative)

Depth shaped by the seafloor limit here (141 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 13, 2026

measured
Seafloor depth
141 m
Sea-surface temperature
13.2°C
Distance from shore
3.0 km

Across the residency · 2 sightings

measured
Seafloor depth
100 m – 141 m
Sea-surface temperature
10.4°C – 13.2°C
Distance from shore
3.0 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 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.