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

Defenestration – Residency

24th sighting in Chatham Strait
Fluke of Defenestration
Defenestration Confirmed in the catalog @16924
Jun 28 – Aug 29, 2022 · Chatham Strait

Chatham Strait · Jun – Aug 2022

141 m
Deepest dive
4:54
Longest dive
184
Dives
Sightings
11
Days between first and last sighting
62

Dive stats modelled within real depth limits — not measured

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SightingSeafloorSea tempDeepest dive (modelled)
Jun 28, 2022433 m11.6°C115 m
Jul 14, 202271 m12.5°C45 m
Jul 15, 202259 m12.4°C40 m
Jul 16, 202295 m12.2°C77 m
Jul 20, 202252 m13.9°C45 m
Aug 9, 202257 m12.3°C45 m
Aug 15, 2022114 m13.8°C85 m
Aug 19, 202277 m12.4°C62 m
Aug 25, 202270 m13.8°C41 m
Aug 28, 2022342 m12.4°C83 m
Aug 29, 2022218 m14.2°C141 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 28, 2022 — seafloor 433 m (measured), deepest dive 115 m (modelled)Jun 28Jul 14, 2022 — seafloor 71 m (measured), deepest dive 45 m (modelled)Jul 14Jul 15, 2022 — seafloor 59 m (measured), deepest dive 40 m (modelled)Jul 15Jul 16, 2022 — seafloor 95 m (measured), deepest dive 77 m (modelled)Jul 16Jul 20, 2022 — seafloor 52 m (measured), deepest dive 45 m (modelled)Jul 20Aug 9, 2022 — seafloor 57 m (measured), deepest dive 45 m (modelled)Aug 9Aug 15, 2022 — seafloor 114 m (measured), deepest dive 85 m (modelled)Aug 15Aug 19, 2022 — seafloor 77 m (measured), deepest dive 62 m (modelled)Aug 19Aug 25, 2022 — seafloor 70 m (measured), deepest dive 41 m (modelled)Aug 25Aug 28, 2022 — seafloor 342 m (measured), deepest dive 83 m (modelled)Aug 28Aug 29, 2022 — seafloor 218 m (measured), deepest dive 141 m (modelled)Aug 29

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

Dives

141 m
Deepest dive
4:54
Longest dive
184
Dives
24 m
Avg dive depth
11
Sightings
62
Days first → last

Dive metrics are modelled within real depth limits — not measured

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Dive profile

modelled
075150141 mstartdive sequence (illustrative)

Depth shaped by the seafloor limit here (218 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 29, 2022

measured
Seafloor depth
218 m
Sea-surface temperature
14.2°C
Distance from shore
2.0 km

Across the residency · 11 sightings

measured
Seafloor depth
52 m – 433 m
Sea-surface temperature
11.6°C – 14.2°C
Distance from shore
1.0 km – 9.0 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 11 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.