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Lynn Canal & Stephens Passage

Manunauna – Residency

66th sighting in Lynn Canal & Stephens Passage
Fluke of Manunauna
Manunauna Confirmed in the catalog @5412
May 15 – Oct 10, 2026 · Lynn Canal & Stephens Passage

Green Water Regulars

Chatham's crowd knows my surface — I know theirs. Good company, this cold.

162 m
Deepest dive
4:46
Longest dive
170
Dives
Sightings
14
Days between first and last sighting
148
Deepest dive on record
162 m · this residency

Dive stats modelled within real depth limits — not measured

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SightingSeafloorSea tempDeepest dive (modelled)
May 15, 202672 m7.5°C40 m
May 16, 202668 m7.7°C48 m
May 20, 2026110 m7.9°C82 m
May 21, 202649 m7.8°C42 m
May 22, 202640 m7.8°C36 m
May 31, 202636 m8.2°C33 m
Jun 2, 202672 m8.0°C53 m
Jun 3, 202665 m8.1°C58 m
Jun 9, 202653 m9.6°C41 m
Jun 11, 2026105 m9.7°C90 m
Jun 12, 202662 m9.8°C50 m
Jun 13, 202672 m10.2°C48 m
Jul 25, 2026229 m12.1°C162 m
Oct 10, 2026142 m9.6°C117 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 15, 2026 — seafloor 72 m (measured), deepest dive 40 m (modelled)May 15May 16, 2026 — seafloor 68 m (measured), deepest dive 48 m (modelled)May 20, 2026 — seafloor 110 m (measured), deepest dive 82 m (modelled)May 21, 2026 — seafloor 49 m (measured), deepest dive 42 m (modelled)May 21May 22, 2026 — seafloor 40 m (measured), deepest dive 36 m (modelled)May 31, 2026 — seafloor 36 m (measured), deepest dive 33 m (modelled)Jun 2, 2026 — seafloor 72 m (measured), deepest dive 53 m (modelled)Jun 2Jun 3, 2026 — seafloor 65 m (measured), deepest dive 58 m (modelled)Jun 9, 2026 — seafloor 53 m (measured), deepest dive 41 m (modelled)Jun 11, 2026 — seafloor 105 m (measured), deepest dive 90 m (modelled)Jun 11Jun 12, 2026 — seafloor 62 m (measured), deepest dive 50 m (modelled)Jun 13, 2026 — seafloor 72 m (measured), deepest dive 48 m (modelled)Jul 25, 2026 — seafloor 229 m (measured), deepest dive 162 m (modelled)Jul 25Oct 10, 2026 — seafloor 142 m (measured), deepest dive 117 m (modelled)

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

Dives

162 m
Deepest dive
4:46
Longest dive
170
Dives
25 m
Avg dive depth
14
Sightings
148
Days first → last

Dive metrics are modelled within real depth limits — not measured

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Dive profile

modelled
0100200162 mstartdive sequence (illustrative)

Depth shaped by the seafloor limit here (229 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 · Jul 25, 2026

measured
Seafloor depth
229 m
Sea-surface temperature
12.1°C
Distance from shore
2.0 km

Across the residency · 14 sightings

measured
Seafloor depth
36 m – 229 m
Sea-surface temperature
7.5°C – 12.1°C
Distance from shore
1.0 km – 3.0 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 14 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.