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

Puhina – Residency

26th sighting in Chatham Strait
Fluke of Puhina
Puhina Confirmed in the catalog @13783
Jun 13 – Aug 6, 2025 · Chatham Strait

Chatham Strait · Jun – Aug 2025

117 m
Deepest dive
3:51
Longest dive
48
Dives
Sightings
4
Days between first and last sighting
54

Dive stats modelled within real depth limits — not measured

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SightingSeafloorSea tempDeepest dive (modelled)
Jun 13, 202575 m10.8°C66 m
Jul 5, 202566 m11.5°C45 m
Jul 19, 2025158 m12.2°C117 m
Aug 6, 202545 m13.2°C34 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 13, 2025 — seafloor 75 m (measured), deepest dive 66 m (modelled)Jun 13Jul 5, 2025 — seafloor 66 m (measured), deepest dive 45 m (modelled)Jul 5Jul 19, 2025 — seafloor 158 m (measured), deepest dive 117 m (modelled)Jul 19Aug 6, 2025 — seafloor 45 m (measured), deepest dive 34 m (modelled)Aug 6

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

Dives

117 m
Deepest dive
3:51
Longest dive
48
Dives
23 m
Avg dive depth
4
Sightings
54
Days first → last

Dive metrics are modelled within real depth limits — not measured

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Dive profile

modelled
075150117 mstartdive sequence (illustrative)

Depth shaped by the seafloor limit here (158 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 19, 2025

measured
Seafloor depth
158 m
Sea-surface temperature
12.2°C
Distance from shore
4.0 km

Across the residency · 4 sightings

measured
Seafloor depth
45 m – 158 m
Sea-surface temperature
10.8°C – 13.2°C
Distance from shore
1.0 km – 4.0 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.