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Lynn Canal & Stephens Passage

Twin Peaks – Residency

36th sighting in Lynn Canal & Stephens Passage
Fluke of Twin Peaks
Twin Peaks Confirmed in the catalog @12323
Jul 9 – Sep 30, 2025 · Lynn Canal & Stephens Passage

Lynn Canal & Stephens Passage · Jul – Sep 2025

153 m
Deepest dive
6:54
Longest dive
199
Dives
Sightings
13
Days between first and last sighting
83
Deepest dive on record
153 m · this residency

Dive stats modelled within real depth limits — not measured

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SightingSeafloorSea tempDeepest dive (modelled)
Jul 9, 2025153 m12.6°C68 m
Jul 12, 202588 m12.2°C65 m
Jul 13, 2025153 m12.2°C77 m
Jul 14, 202543 m12.4°C33 m
Jul 21, 202531 m13.4°C27 m
Jul 24, 2025106 m14.4°C57 m
Jul 25, 202581 m13.3°C39 m
Jul 25, 2025119 m13.3°C77 m
Jul 26, 202591 m14.4°C80 m
Jul 27, 202564 m14.4°C55 m
Jul 28, 202576 m14.4°C42 m
Sep 29, 202556 m11.7°C49 m
Sep 30, 2025218 m11.4°C153 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
Jul 9, 2025 — seafloor 153 m (measured), deepest dive 68 m (modelled)Jul 9Jul 12, 2025 — seafloor 88 m (measured), deepest dive 65 m (modelled)Jul 13, 2025 — seafloor 153 m (measured), deepest dive 77 m (modelled)Jul 14, 2025 — seafloor 43 m (measured), deepest dive 33 m (modelled)Jul 14Jul 21, 2025 — seafloor 31 m (measured), deepest dive 27 m (modelled)Jul 24, 2025 — seafloor 106 m (measured), deepest dive 57 m (modelled)Jul 25, 2025 — seafloor 81 m (measured), deepest dive 39 m (modelled)Jul 25Jul 25, 2025 — seafloor 119 m (measured), deepest dive 77 m (modelled)Jul 26, 2025 — seafloor 91 m (measured), deepest dive 80 m (modelled)Jul 27, 2025 — seafloor 64 m (measured), deepest dive 55 m (modelled)Jul 27Jul 28, 2025 — seafloor 76 m (measured), deepest dive 42 m (modelled)Sep 29, 2025 — seafloor 56 m (measured), deepest dive 49 m (modelled)Sep 30, 2025 — seafloor 218 m (measured), deepest dive 153 m (modelled)Sep 30

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

Dives

153 m
Deepest dive
6:54
Longest dive
199
Dives
25 m
Avg dive depth
13
Sightings
83
Days first → last

Dive metrics are modelled within real depth limits — not measured

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Dive profile

modelled
0100200153 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 · Sep 30, 2025

measured
Seafloor depth
218 m
Sea-surface temperature
11.4°C
Distance from shore
—

Across the residency · 13 sightings

measured
Seafloor depth
31 m – 218 m
Sea-surface temperature
11.4°C – 14.4°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 13 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.