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

Daily – Residency

12th sighting in Chatham Strait
Fluke of Daily
Daily Confirmed in the catalog @27346
Apr 28 – Aug 1, 2023 · Chatham Strait

Chatham Strait · Apr – Aug 2023

69 m
Deepest dive
3:11
Longest dive
71
Dives
Sightings
6
Days between first and last sighting
95

Dive stats modelled within real depth limits — not measured

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SightingSeafloorSea tempDeepest dive (modelled)
Apr 28, 202344 m5.7°C33 m
Apr 30, 2023123 m5.6°C69 m
May 1, 202364 m5.9°C48 m
Jun 25, 202380 m12.3°C63 m
Jun 26, 202399 m12.7°C24 m
Aug 1, 2023145 m15.6°C38 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
Apr 28, 2023 — seafloor 44 m (measured), deepest dive 33 m (modelled)Apr 28Apr 30, 2023 — seafloor 123 m (measured), deepest dive 69 m (modelled)Apr 30May 1, 2023 — seafloor 64 m (measured), deepest dive 48 m (modelled)May 1Jun 25, 2023 — seafloor 80 m (measured), deepest dive 63 m (modelled)Jun 25Jun 26, 2023 — seafloor 99 m (measured), deepest dive 24 m (modelled)Jun 26Aug 1, 2023 — seafloor 145 m (measured), deepest dive 38 m (modelled)Aug 1

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

Dives

69 m
Deepest dive
3:11
Longest dive
71
Dives
24 m
Avg dive depth
6
Sightings
95
Days first → last

Dive metrics are modelled within real depth limits — not measured

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Dive profile

modelled
05010069 mstartdive sequence (illustrative)

Depth shaped by the seafloor limit here (123 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 · Apr 30, 2023

measured
Seafloor depth
123 m
Sea-surface temperature
5.6°C
Distance from shore
1.0 km

Across the residency · 6 sightings

measured
Seafloor depth
44 m – 145 m
Sea-surface temperature
5.6°C – 15.6°C
Distance from shore
1.0 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 6 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.