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

Twin Peaks – Residency

45th sighting in Lynn Canal & Stephens Passage
Fluke of Twin Peaks
Twin Peaks Confirmed in the catalog @12323
May 19 – Aug 21, 2026 · Lynn Canal & Stephens Passage

Icy Strait, every summer

Herring called, I answered, whole season logged in this cold green water.

78 m
Deepest dive
2:46
Longest dive
116
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)
May 19, 2026289 m8.1°C16 m
Aug 13, 202687 m15.1°C57 m
Aug 14, 202699 m15.1°C41 m
Aug 15, 202651 m15.6°C43 m
Aug 16, 202697 m15.7°C48 m
Aug 17, 202691 m15.8°C78 m
Aug 18, 202690 m15.6°C72 m
Aug 19, 202678 m14.8°C69 m
Aug 20, 202691 m15.0°C71 m
Aug 21, 202664 m15.1°C46 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
May 19, 2026 — seafloor 289 m (measured), deepest dive 16 m (modelled)May 19Aug 13, 2026 — seafloor 87 m (measured), deepest dive 57 m (modelled)Aug 13Aug 14, 2026 — seafloor 99 m (measured), deepest dive 41 m (modelled)Aug 14Aug 15, 2026 — seafloor 51 m (measured), deepest dive 43 m (modelled)Aug 15Aug 16, 2026 — seafloor 97 m (measured), deepest dive 48 m (modelled)Aug 16Aug 17, 2026 — seafloor 91 m (measured), deepest dive 78 m (modelled)Aug 17Aug 18, 2026 — seafloor 90 m (measured), deepest dive 72 m (modelled)Aug 18Aug 19, 2026 — seafloor 78 m (measured), deepest dive 69 m (modelled)Aug 19Aug 20, 2026 — seafloor 91 m (measured), deepest dive 71 m (modelled)Aug 20Aug 21, 2026 — seafloor 64 m (measured), deepest dive 46 m (modelled)Aug 21

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

Dives

78 m
Deepest dive
2:46
Longest dive
116
Dives
23 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
05010078 mstartdive sequence (illustrative)

Depth shaped by the seafloor limit here (91 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 17, 2026

measured
Seafloor depth
91 m
Sea-surface temperature
15.8°C
Distance from shore
1.0 km

Across the residency · 10 sightings

measured
Seafloor depth
51 m – 289 m
Sea-surface temperature
8.1°C – 15.8°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.