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Chatham Strait

Polinahe – Residency

38th sighting in Chatham Strait
Fluke of Polinahe
Polinahe Confirmed in the catalog @5462
Jun 3 – Sep 16, 2023 · Chatham Strait

Chatham Strait · Jun – Sep 2023

125 m
Deepest dive
4:07
Longest dive
269
Dives
Sightings
21
Days between first and last sighting
105

Dive stats modelled within real depth limits — not measured

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SightingSeafloorSea tempDeepest dive (modelled)
Jun 3, 202347 m8.6°C36 m
Jun 8, 202373 m9.0°C59 m
Jun 9, 202337 m9.2°C28 m
Jun 21, 2023132 m9.8°C75 m
Jun 27, 202375 m10.8°C33 m
Jun 28, 202399 m10.5°C68 m
Jul 1, 202380 m11.2°C63 m
Jul 8, 2023247 m12.0°C125 m
Jul 8, 2023111 m11.9°C91 m
Jul 11, 2023111 m11.8°C96 m
Jul 11, 202357 m12.0°C36 m
Jul 12, 2023111 m12.1°C83 m
Jul 14, 202364 m13.1°C46 m
Jul 14, 202342 m13.0°C35 m
Jul 15, 202365 m13.0°C51 m
Jul 17, 202391 m12.0°C74 m
Jul 20, 202348 m11.7°C44 m
Jul 24, 202359 m12.2°C26 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 3, 2023 — seafloor 47 m (measured), deepest dive 36 m (modelled)Jun 3Jun 8, 2023 — seafloor 73 m (measured), deepest dive 59 m (modelled)Jun 9, 2023 — seafloor 37 m (measured), deepest dive 28 m (modelled)Jun 21, 2023 — seafloor 132 m (measured), deepest dive 75 m (modelled)Jun 27, 2023 — seafloor 75 m (measured), deepest dive 33 m (modelled)Jun 27Jun 28, 2023 — seafloor 99 m (measured), deepest dive 68 m (modelled)Jul 1, 2023 — seafloor 80 m (measured), deepest dive 63 m (modelled)Jul 8, 2023 — seafloor 247 m (measured), deepest dive 125 m (modelled)Jul 8, 2023 — seafloor 111 m (measured), deepest dive 91 m (modelled)Jul 8Jul 11, 2023 — seafloor 111 m (measured), deepest dive 96 m (modelled)Jul 11, 2023 — seafloor 57 m (measured), deepest dive 36 m (modelled)Jul 12, 2023 — seafloor 111 m (measured), deepest dive 83 m (modelled)Jul 14, 2023 — seafloor 64 m (measured), deepest dive 46 m (modelled)Jul 14Jul 14, 2023 — seafloor 42 m (measured), deepest dive 35 m (modelled)Jul 15, 2023 — seafloor 65 m (measured), deepest dive 51 m (modelled)Jul 17, 2023 — seafloor 91 m (measured), deepest dive 74 m (modelled)Jul 20, 2023 — seafloor 48 m (measured), deepest dive 44 m (modelled)Jul 20Jul 24, 2023 — seafloor 59 m (measured), deepest dive 26 m (modelled)Jul 29, 2023 — seafloor 39 m (measured), deepest dive 31 m (modelled)Sep 11, 2023 — seafloor 39 m (measured), deepest dive 32 m (modelled)Sep 16, 2023 — seafloor 232 m (measured), deepest dive 60 m (modelled)Sep 16

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

Dives

125 m
Deepest dive
4:07
Longest dive
269
Dives
23 m
Avg dive depth
21
Sightings
105
Days first → last

Dive metrics are modelled within real depth limits — not measured

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Dive profile

modelled
075150125 mstartdive sequence (illustrative)

Depth shaped by the seafloor limit here (247 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 8, 2023

measured
Seafloor depth
247 m
Sea-surface temperature
12.0°C
Distance from shore
7.0 km

Across the residency · 21 sightings

measured
Seafloor depth
37 m – 247 m
Sea-surface temperature
8.6°C – 13.5°C
Distance from shore
1.0 km – 7.0 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 21 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.