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Sitka Sound & Outer Baranof

GrayShell – Residency

72nd sighting in Sitka Sound & Outer Baranof
Fluke of GrayShell
GrayShell Confirmed in the catalog @26825
Jun 11 – Sep 8, 2025 · Sitka Sound & Outer Baranof

Sitka Sound & Outer Baranof · Jun – Sep 2025

103 m
Deepest dive
3:48
Longest dive
173
Dives
Sightings
12
Days between first and last sighting
89
Deepest dive on record
103 m · this residency

Dive stats modelled within real depth limits — not measured

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SightingSeafloorSea tempDeepest dive (modelled)
Jun 11, 2025120 m9.0°C103 m
Jul 4, 202578 m13.0°C64 m
Jul 9, 202598 m13.6°C80 m
Jul 10, 2025132 m13.6°C52 m
Jul 14, 2025133 m13.8°C37 m
Jul 22, 202578 m13.6°C69 m
Aug 2, 202568 m14.2°C26 m
Aug 16, 202532 m14.5°C27 m
Aug 21, 202578 m14.9°C43 m
Sep 3, 2025114 m14.7°C68 m
Sep 7, 2025135 m14.4°C71 m
Sep 8, 2025114 m14.3°C72 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
Jun 11, 2025 — seafloor 120 m (measured), deepest dive 103 m (modelled)Jun 11Jul 4, 2025 — seafloor 78 m (measured), deepest dive 64 m (modelled)Jul 4Jul 9, 2025 — seafloor 98 m (measured), deepest dive 80 m (modelled)Jul 9Jul 10, 2025 — seafloor 132 m (measured), deepest dive 52 m (modelled)Jul 10Jul 14, 2025 — seafloor 133 m (measured), deepest dive 37 m (modelled)Jul 14Jul 22, 2025 — seafloor 78 m (measured), deepest dive 69 m (modelled)Jul 22Aug 2, 2025 — seafloor 68 m (measured), deepest dive 26 m (modelled)Aug 2Aug 16, 2025 — seafloor 32 m (measured), deepest dive 27 m (modelled)Aug 16Aug 21, 2025 — seafloor 78 m (measured), deepest dive 43 m (modelled)Aug 21Sep 3, 2025 — seafloor 114 m (measured), deepest dive 68 m (modelled)Sep 3Sep 7, 2025 — seafloor 135 m (measured), deepest dive 71 m (modelled)Sep 7Sep 8, 2025 — seafloor 114 m (measured), deepest dive 72 m (modelled)Sep 8

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

Dives

103 m
Deepest dive
3:48
Longest dive
173
Dives
23 m
Avg dive depth
12
Sightings
89
Days first → last

Dive metrics are modelled within real depth limits — not measured

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Dive profile

modelled
075150103 mstartdive sequence (illustrative)

Depth shaped by the seafloor limit here (120 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 · Jun 11, 2025

measured
Seafloor depth
120 m
Sea-surface temperature
9.0°C
Distance from shore
6.0 km

Across the residency · 12 sightings

measured
Seafloor depth
32 m – 135 m
Sea-surface temperature
9.0°C – 14.9°C
Distance from shore
1.0 km – 7.0 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 12 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.