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Chatham Strait

Scratch – Residency

11th sighting in Chatham Strait
Fluke of Scratch
Scratch Confirmed in the catalog @5323
Jun 14 – Sep 16, 2019 · Chatham Strait

Chatham Strait · Jun – Sep 2019

175 m
Deepest dive
7:02
Longest dive
90
Dives
Sightings
10
Days between first and last sighting
94

Dive stats modelled within real depth limits — not measured

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SightingSeafloorSea tempDeepest dive (modelled)
Jun 14, 2019158 m10.9°C107 m
Jun 15, 2019243 m10.5°C175 m
Jul 20, 2019129 m12.6°C48 m
Jul 21, 2019273 m12.8°C87 m
Jul 24, 2019269 m13.6°C88 m
Aug 21, 2019177 m12.7°C83 m
Aug 24, 2019117 m12.0°C29 m
Aug 28, 201993 m11.6°C37 m
Sep 15, 2019167 m12.1°C120 m
Sep 16, 2019217 m12.3°C30 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 14, 2019 — seafloor 158 m (measured), deepest dive 107 m (modelled)Jun 14Jun 15, 2019 — seafloor 243 m (measured), deepest dive 175 m (modelled)Jun 15Jul 20, 2019 — seafloor 129 m (measured), deepest dive 48 m (modelled)Jul 20Jul 21, 2019 — seafloor 273 m (measured), deepest dive 87 m (modelled)Jul 21Jul 24, 2019 — seafloor 269 m (measured), deepest dive 88 m (modelled)Jul 24Aug 21, 2019 — seafloor 177 m (measured), deepest dive 83 m (modelled)Aug 21Aug 24, 2019 — seafloor 117 m (measured), deepest dive 29 m (modelled)Aug 24Aug 28, 2019 — seafloor 93 m (measured), deepest dive 37 m (modelled)Aug 28Sep 15, 2019 — seafloor 167 m (measured), deepest dive 120 m (modelled)Sep 15Sep 16, 2019 — seafloor 217 m (measured), deepest dive 30 m (modelled)Sep 16

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

Dives

175 m
Deepest dive
7:02
Longest dive
90
Dives
33 m
Avg dive depth
10
Sightings
94
Days first → last

Dive metrics are modelled within real depth limits — not measured

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Dive profile

modelled
0100200175 mstartdive sequence (illustrative)

Depth shaped by the seafloor limit here (243 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 · Jun 15, 2019

measured
Seafloor depth
243 m
Sea-surface temperature
10.5°C
Distance from shore
1.0 km

Across the residency · 10 sightings

measured
Seafloor depth
93 m – 273 m
Sea-surface temperature
10.5°C – 13.6°C
Distance from shore
1.0 km – 2.0 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.