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Lynn Canal & Stephens Passage

Mustard – Residency

26th sighting in Lynn Canal & Stephens Passage
Fluke of Mustard
Mustard Confirmed in the catalog @15644
May 5 – Jun 30, 2026 · Lynn Canal & Stephens Passage

Cold Water, Long Ledger

Glacier melt in my mouth, and the strait still knows my face.

89 m
Deepest dive
3:10
Longest dive
106
Dives
Sightings
11
Days between first and last sighting
56

Dive stats modelled within real depth limits — not measured

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SightingSeafloorSea tempDeepest dive (modelled)
May 5, 202664 m6.8°C30 m
May 5, 202627 m6.8°C23 m
May 5, 2026101 m6.8°C72 m
May 11, 202659 m7.9°C53 m
May 20, 202672 m7.9°C51 m
May 24, 202682 m7.8°C39 m
May 27, 202689 m8.2°C67 m
May 30, 2026102 m8.0°C89 m
Jun 14, 2026100 m10.0°C49 m
Jun 29, 202672 m11.8°C40 m
Jun 30, 2026139 m11.8°C41 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 5, 2026 — seafloor 64 m (measured), deepest dive 30 m (modelled)May 5May 5, 2026 — seafloor 27 m (measured), deepest dive 23 m (modelled)May 5May 5, 2026 — seafloor 101 m (measured), deepest dive 72 m (modelled)May 5May 11, 2026 — seafloor 59 m (measured), deepest dive 53 m (modelled)May 11May 20, 2026 — seafloor 72 m (measured), deepest dive 51 m (modelled)May 20May 24, 2026 — seafloor 82 m (measured), deepest dive 39 m (modelled)May 24May 27, 2026 — seafloor 89 m (measured), deepest dive 67 m (modelled)May 27May 30, 2026 — seafloor 102 m (measured), deepest dive 89 m (modelled)May 30Jun 14, 2026 — seafloor 100 m (measured), deepest dive 49 m (modelled)Jun 14Jun 29, 2026 — seafloor 72 m (measured), deepest dive 40 m (modelled)Jun 29Jun 30, 2026 — seafloor 139 m (measured), deepest dive 41 m (modelled)Jun 30

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

Dives

89 m
Deepest dive
3:10
Longest dive
106
Dives
22 m
Avg dive depth
11
Sightings
56
Days first → last

Dive metrics are modelled within real depth limits — not measured

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Dive profile

modelled
05010089 mstartdive sequence (illustrative)

Depth shaped by the seafloor limit here (102 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 · May 30, 2026

measured
Seafloor depth
102 m
Sea-surface temperature
8.0°C
Distance from shore
—

Across the residency · 11 sightings

measured
Seafloor depth
27 m – 139 m
Sea-surface temperature
6.8°C – 11.8°C
Distance from shore
1.0 km – 4.0 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 11 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.