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

Pōwehi – Residency

6th sighting in Chatham Strait
Fluke of Pōwehi
Pōwehi Confirmed in the catalog @26741
Jun 21 – Aug 10, 2024 · Chatham Strait

Chatham Strait · Jun – Aug 2024

53 m
Deepest dive
2:15
Longest dive
15
Dives
Sightings
3
Days between first and last sighting
50

Dive stats modelled within real depth limits — not measured

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SightingSeafloorSea tempDeepest dive (modelled)
Jun 21, 2024358 m10.5°C45 m
Jul 9, 202485 m11.7°C53 m
Aug 10, 2024111 m12.7°C49 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 21, 2024 — seafloor 358 m (measured), deepest dive 45 m (modelled)Jun 21Jul 9, 2024 — seafloor 85 m (measured), deepest dive 53 m (modelled)Jul 9Aug 10, 2024 — seafloor 111 m (measured), deepest dive 49 m (modelled)Aug 10

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

Dives

53 m
Deepest dive
2:15
Longest dive
15
Dives
25 m
Avg dive depth
3
Sightings
50
Days first → last

Dive metrics are modelled within real depth limits — not measured

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Dive profile

modelled
05010053 mstartdive sequence (illustrative)

Depth shaped by the seafloor limit here (85 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 9, 2024

measured
Seafloor depth
85 m
Sea-surface temperature
11.7°C
Distance from shore
2.0 km

Across the residency · 3 sightings

measured
Seafloor depth
85 m – 358 m
Sea-surface temperature
10.5°C – 12.7°C
Distance from shore
2.0 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 3 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.