Activity map — real sighting points on an OpenStreetMap basemap © OpenStreetMap contributors
Lynn Canal & Stephens Passage

Twin Peaks – Residency

22nd sighting in Lynn Canal & Stephens Passage
Fluke of Twin Peaks
Twin Peaks Confirmed in the catalog @12323
Jun 27 – Sep 3, 2023 · Lynn Canal & Stephens Passage

Lynn Canal & Stephens Passage · Jun – Sep 2023

73 m
Deepest dive
3:25
Longest dive
77
Dives
Sightings
5
Days between first and last sighting
68

Dive stats modelled within real depth limits — not measured

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SightingSeafloorSea tempDeepest dive (modelled)
Jun 27, 202341 m12.4°C26 m
Jul 4, 202345 m11.7°C41 m
Sep 2, 202372 m13.6°C54 m
Sep 3, 202349 m12.8°C39 m
Sep 3, 202382 m12.5°C73 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 27, 2023 — seafloor 41 m (measured), deepest dive 26 m (modelled)Jun 27Jul 4, 2023 — seafloor 45 m (measured), deepest dive 41 m (modelled)Jul 4Sep 2, 2023 — seafloor 72 m (measured), deepest dive 54 m (modelled)Sep 2Sep 3, 2023 — seafloor 49 m (measured), deepest dive 39 m (modelled)Sep 3Sep 3, 2023 — seafloor 82 m (measured), deepest dive 73 m (modelled)Sep 3

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

Dives

73 m
Deepest dive
3:25
Longest dive
77
Dives
21 m
Avg dive depth
5
Sightings
68
Days first → last

Dive metrics are modelled within real depth limits — not measured

Get actual dive data with Risa Deep →

Dive profile

modelled
05010073 mstartdive sequence (illustrative)

Depth shaped by the seafloor limit here (82 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 · Sep 3, 2023

measured
Seafloor depth
82 m
Sea-surface temperature
12.5°C
Distance from shore
1.0 km

Across the residency · 5 sightings

measured
Seafloor depth
41 m – 82 m
Sea-surface temperature
11.7°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 5 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.