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Chatham Strait

Twyla – Residency

65th sighting in Chatham Strait
Fluke of Twyla
Twyla Confirmed in the catalog @6414
Jun 18 – Aug 11, 2024 · Chatham Strait

Chatham Strait · Jun – Aug 2024

74 m
Deepest dive
2:37
Longest dive
113
Dives
Sightings
12
Days between first and last sighting
54

Dive stats modelled within real depth limits — not measured

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SightingSeafloorSea tempDeepest dive (modelled)
Jun 18, 202449 m11.0°C43 m
Jun 20, 202477 m10.8°C65 m
Jun 29, 2024334 m10.3°C48 m
Jul 8, 202460 m12.2°C46 m
Jul 9, 202458 m12.1°C41 m
Jul 11, 202495 m10.1°C22 m
Jul 25, 202475 m10.2°C31 m
Jul 29, 202452 m9.8°C21 m
Aug 8, 2024324 m13.6°C74 m
Aug 8, 202486 m12.8°C28 m
Aug 8, 202442 m12.9°C35 m
Aug 11, 20247 m12.3°C6 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 18, 2024 — seafloor 49 m (measured), deepest dive 43 m (modelled)Jun 18Jun 20, 2024 — seafloor 77 m (measured), deepest dive 65 m (modelled)Jun 20Jun 29, 2024 — seafloor 334 m (measured), deepest dive 48 m (modelled)Jun 29Jul 8, 2024 — seafloor 60 m (measured), deepest dive 46 m (modelled)Jul 8Jul 9, 2024 — seafloor 58 m (measured), deepest dive 41 m (modelled)Jul 9Jul 11, 2024 — seafloor 95 m (measured), deepest dive 22 m (modelled)Jul 11Jul 25, 2024 — seafloor 75 m (measured), deepest dive 31 m (modelled)Jul 25Jul 29, 2024 — seafloor 52 m (measured), deepest dive 21 m (modelled)Jul 29Aug 8, 2024 — seafloor 324 m (measured), deepest dive 74 m (modelled)Aug 8Aug 8, 2024 — seafloor 86 m (measured), deepest dive 28 m (modelled)Aug 8Aug 8, 2024 — seafloor 42 m (measured), deepest dive 35 m (modelled)Aug 8Aug 11, 2024 — seafloor 7 m (measured), deepest dive 6 m (modelled)Aug 11

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

Dives

74 m
Deepest dive
2:37
Longest dive
113
Dives
19 m
Avg dive depth
12
Sightings
54
Days first → last

Dive metrics are modelled within real depth limits — not measured

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Dive profile

modelled
05010074 mstartdive sequence (illustrative)

Depth shaped by the seafloor limit here (324 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
324 m
Sea-surface temperature
13.6°C
Distance from shore
3.0 km

Across the residency · 12 sightings

measured
Seafloor depth
7 m – 334 m
Sea-surface temperature
9.8°C – 13.6°C
Distance from shore
2.0 km – 6.0 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 12 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.