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

Polinahe – Residency

48th sighting in Chatham Strait
Fluke of Polinahe
Polinahe Confirmed in the catalog @5462
Jun 16 – Aug 8, 2024 · Chatham Strait

Chatham Strait · Jun – Aug 2024

289 m
Deepest dive
8:57
Longest dive
115
Dives
Sightings
10
Days between first and last sighting
53
Deepest dive on record
289 m · this residency

Dive stats modelled within real depth limits — not measured

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SightingSeafloorSea tempDeepest dive (modelled)
Jun 16, 2024116 m10.0°C59 m
Jun 30, 202434 m11.3°C30 m
Jul 3, 202457 m10.3°C37 m
Jul 3, 2024653 m10.2°C76 m
Jul 5, 202411 m10.7°C10 m
Jul 24, 202496 m10.1°C68 m
Jul 25, 202477 m10.2°C60 m
Aug 8, 2024327 m13.7°C289 m
Aug 8, 202486 m12.8°C56 m
Aug 8, 202445 m12.9°C27 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 16, 2024 — seafloor 116 m (measured), deepest dive 59 m (modelled)Jun 16Jun 30, 2024 — seafloor 34 m (measured), deepest dive 30 m (modelled)Jun 30Jul 3, 2024 — seafloor 57 m (measured), deepest dive 37 m (modelled)Jul 3Jul 3, 2024 — seafloor 653 m (measured), deepest dive 76 m (modelled)Jul 3Jul 5, 2024 — seafloor 11 m (measured), deepest dive 10 m (modelled)Jul 5Jul 24, 2024 — seafloor 96 m (measured), deepest dive 68 m (modelled)Jul 24Jul 25, 2024 — seafloor 77 m (measured), deepest dive 60 m (modelled)Jul 25Aug 8, 2024 — seafloor 327 m (measured), deepest dive 289 m (modelled)Aug 8Aug 8, 2024 — seafloor 86 m (measured), deepest dive 56 m (modelled)Aug 8Aug 8, 2024 — seafloor 45 m (measured), deepest dive 27 m (modelled)Aug 8

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

Dives

289 m
Deepest dive
8:57
Longest dive
115
Dives
23 m
Avg dive depth
10
Sightings
53
Days first → last

Dive metrics are modelled within real depth limits — not measured

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Dive profile

modelled
0150300289 mstartdive sequence (illustrative)

Depth shaped by the seafloor limit here (327 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 8, 2024

measured
Seafloor depth
327 m
Sea-surface temperature
13.7°C
Distance from shore
3.0 km

Across the residency · 10 sightings

measured
Seafloor depth
11 m – 653 m
Sea-surface temperature
10.0°C – 13.7°C
Distance from shore
1.0 km – 8.0 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 10 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.