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Lynn Canal & Stephens Passage

Helix – Residency

22nd sighting in Lynn Canal & Stephens Passage
Fluke of Helix
Helix Confirmed in the catalog @18502
Jul 27 – Sep 4, 2026 · Lynn Canal & Stephens Passage

Same Water, Every Summer

Herring thick, camera clicks often — this stretch of green water knows me.

84 m
Deepest dive
3:32
Longest dive
298
Dives
Sightings
30
Days between first and last sighting
39

Dive stats modelled within real depth limits — not measured

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SightingSeafloorSea tempDeepest dive (modelled)
Jul 27, 2026115 m13.0°C54 m
Jul 28, 202657 m13.3°C34 m
Jul 29, 202672 m13.2°C35 m
Jul 30, 202664 m13.1°C44 m
Aug 1, 202676 m13.3°C61 m
Aug 2, 202646 m13.6°C32 m
Aug 3, 202693 m13.7°C38 m
Aug 4, 202682 m13.9°C42 m
Aug 5, 202696 m14.0°C36 m
Aug 6, 202675 m14.0°C50 m
Aug 7, 2026124 m13.8°C48 m
Aug 8, 202698 m13.6°C57 m
Aug 9, 202686 m14.4°C44 m
Aug 10, 202698 m14.8°C73 m
Aug 11, 2026159 m15.2°C47 m
Aug 12, 2026104 m15.1°C31 m
Aug 14, 202680 m15.0°C71 m
Aug 15, 2026116 m15.3°C53 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 27, 2026 — seafloor 115 m (measured), deepest dive 54 m (modelled)Jul 27Jul 28, 2026 — seafloor 57 m (measured), deepest dive 34 m (modelled)Jul 29, 2026 — seafloor 72 m (measured), deepest dive 35 m (modelled)Jul 30, 2026 — seafloor 64 m (measured), deepest dive 44 m (modelled)Aug 1, 2026 — seafloor 76 m (measured), deepest dive 61 m (modelled)Aug 2, 2026 — seafloor 46 m (measured), deepest dive 32 m (modelled)Aug 2Aug 3, 2026 — seafloor 93 m (measured), deepest dive 38 m (modelled)Aug 4, 2026 — seafloor 82 m (measured), deepest dive 42 m (modelled)Aug 5, 2026 — seafloor 96 m (measured), deepest dive 36 m (modelled)Aug 6, 2026 — seafloor 75 m (measured), deepest dive 50 m (modelled)Aug 7, 2026 — seafloor 124 m (measured), deepest dive 48 m (modelled)Aug 7Aug 8, 2026 — seafloor 98 m (measured), deepest dive 57 m (modelled)Aug 9, 2026 — seafloor 86 m (measured), deepest dive 44 m (modelled)Aug 10, 2026 — seafloor 98 m (measured), deepest dive 73 m (modelled)Aug 11, 2026 — seafloor 159 m (measured), deepest dive 47 m (modelled)Aug 12, 2026 — seafloor 104 m (measured), deepest dive 31 m (modelled)Aug 12Aug 14, 2026 — seafloor 80 m (measured), deepest dive 71 m (modelled)Aug 15, 2026 — seafloor 116 m (measured), deepest dive 53 m (modelled)Aug 16, 2026 — seafloor 95 m (measured), deepest dive 75 m (modelled)Aug 17, 2026 — seafloor 61 m (measured), deepest dive 55 m (modelled)Aug 18, 2026 — seafloor 70 m (measured), deepest dive 38 m (modelled)Aug 18Aug 19, 2026 — seafloor 144 m (measured), deepest dive 42 m (modelled)Aug 20, 2026 — seafloor 91 m (measured), deepest dive 65 m (modelled)Aug 21, 2026 — seafloor 82 m (measured), deepest dive 35 m (modelled)Aug 24, 2026 — seafloor 62 m (measured), deepest dive 52 m (modelled)Aug 27, 2026 — seafloor 93 m (measured), deepest dive 75 m (modelled)Aug 27Aug 31, 2026 — seafloor 72 m (measured), deepest dive 13 m (modelled)Aug 31, 2026 — seafloor 97 m (measured), deepest dive 56 m (modelled)Sep 1, 2026 — seafloor 90 m (measured), deepest dive 68 m (modelled)Sep 4, 2026 — seafloor 162 m (measured), deepest dive 84 m (modelled)

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

Dives

84 m
Deepest dive
3:32
Longest dive
298
Dives
22 m
Avg dive depth
30
Sightings
39
Days first → last

Dive metrics are modelled within real depth limits — not measured

Get actual dive data with Risa Deep →

Dive profile

modelled
05010084 mstartdive sequence (illustrative)

Depth shaped by the seafloor limit here (162 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 4, 2026

measured
Seafloor depth
162 m
Sea-surface temperature
12.9°C
Distance from shore
2.0 km

Across the residency · 30 sightings

measured
Seafloor depth
46 m – 162 m
Sea-surface temperature
12.9°C – 15.7°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 30 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.