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

Mooncheese – Residency

60th sighting in Lynn Canal & Stephens Passage
Fluke of Mooncheese
Mooncheese Confirmed in the catalog @18088
Feb 11 – Apr 24, 2025 · Lynn Canal & Stephens Passage

Lynn Canal & Stephens Passage · Feb – Apr 2025

68 m
Deepest dive
2:27
Longest dive
72
Dives
Sightings
2
Days between first and last sighting
72

Dive stats modelled within real depth limits — not measured

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SightingSeafloorSea tempDeepest dive (modelled)
Feb 11, 202579 m3.7°C68 m
Apr 24, 20255 m5.8°C5 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
Feb 11, 2025 — seafloor 79 m (measured), deepest dive 68 m (modelled)Feb 11Apr 24, 2025 — seafloor 5 m (measured), deepest dive 5 m (modelled)Apr 24

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

Dives

68 m
Deepest dive
2:27
Longest dive
72
Dives
13 m
Avg dive depth
2
Sightings
72
Days first → last

Dive metrics are modelled within real depth limits — not measured

Get actual dive data with Risa Deep →

Dive profile

modelled
05010068 mstartdive sequence (illustrative)

Depth shaped by the seafloor limit here (79 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 · Feb 11, 2025

measured
Seafloor depth
79 m
Sea-surface temperature
3.7°C
Distance from shore
1.0 km

Across the residency · 2 sightings

measured
Seafloor depth
5 m – 79 m
Sea-surface temperature
3.7°C – 5.8°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 2 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.