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Sitka Sound & Outer Baranof

GrayShell – Residency

96th sighting in Sitka Sound & Outer Baranof
Fluke of GrayShell
GrayShell Confirmed in the catalog @26825
Jun 2 – Sep 29, 2026 · Sitka Sound & Outer Baranof

Long Summer in the Straits

Whole season here, same fins nearby, tail known by both ends.

92 m
Deepest dive
4:42
Longest dive
310
Dives
Sightings
24
Days between first and last sighting
119

Dive stats modelled within real depth limits — not measured

Get actual dive data with Risa Deep →
SightingSeafloorSea tempDeepest dive (modelled)
Jun 2, 202658 m10.3°C50 m
Jun 25, 2026155 m11.8°C33 m
Jun 30, 2026100 m11.9°C92 m
Jul 3, 2026150 m11.8°C65 m
Jul 4, 2026102 m11.7°C76 m
Jul 9, 202678 m12.1°C63 m
Jul 10, 202654 m12.2°C39 m
Jul 13, 202677 m12.8°C69 m
Jul 14, 202678 m13.0°C66 m
Jul 16, 202678 m13.0°C53 m
Aug 3, 202633 m13.3°C23 m
Aug 6, 202655 m13.8°C29 m
Aug 7, 202655 m14.0°C48 m
Aug 8, 202671 m13.8°C47 m
Aug 19, 202673 m14.6°C42 m
Aug 29, 202678 m14.5°C56 m
Aug 29, 202678 m14.5°C69 m
Aug 30, 2026103 m14.5°C75 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 2, 2026 — seafloor 58 m (measured), deepest dive 50 m (modelled)Jun 2Jun 25, 2026 — seafloor 155 m (measured), deepest dive 33 m (modelled)Jun 30, 2026 — seafloor 100 m (measured), deepest dive 92 m (modelled)Jul 3, 2026 — seafloor 150 m (measured), deepest dive 65 m (modelled)Jul 4, 2026 — seafloor 102 m (measured), deepest dive 76 m (modelled)Jul 4Jul 9, 2026 — seafloor 78 m (measured), deepest dive 63 m (modelled)Jul 10, 2026 — seafloor 54 m (measured), deepest dive 39 m (modelled)Jul 13, 2026 — seafloor 77 m (measured), deepest dive 69 m (modelled)Jul 14, 2026 — seafloor 78 m (measured), deepest dive 66 m (modelled)Jul 14Jul 16, 2026 — seafloor 78 m (measured), deepest dive 53 m (modelled)Aug 3, 2026 — seafloor 33 m (measured), deepest dive 23 m (modelled)Aug 6, 2026 — seafloor 55 m (measured), deepest dive 29 m (modelled)Aug 7, 2026 — seafloor 55 m (measured), deepest dive 48 m (modelled)Aug 7Aug 8, 2026 — seafloor 71 m (measured), deepest dive 47 m (modelled)Aug 19, 2026 — seafloor 73 m (measured), deepest dive 42 m (modelled)Aug 29, 2026 — seafloor 78 m (measured), deepest dive 56 m (modelled)Aug 29, 2026 — seafloor 78 m (measured), deepest dive 69 m (modelled)Aug 29Aug 30, 2026 — seafloor 103 m (measured), deepest dive 75 m (modelled)Sep 2, 2026 — seafloor 143 m (measured), deepest dive 64 m (modelled)Sep 4, 2026 — seafloor 100 m (measured), deepest dive 69 m (modelled)Sep 6, 2026 — seafloor 67 m (measured), deepest dive 58 m (modelled)Sep 6Sep 10, 2026 — seafloor 143 m (measured), deepest dive 41 m (modelled)Sep 25, 2026 — seafloor 83 m (measured), deepest dive 62 m (modelled)Sep 29, 2026 — seafloor 74 m (measured), deepest dive 64 m (modelled)

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

Dives

92 m
Deepest dive
4:42
Longest dive
310
Dives
23 m
Avg dive depth
24
Sightings
119
Days first → last

Dive metrics are modelled within real depth limits — not measured

Get actual dive data with Risa Deep →

Dive profile

modelled
05010092 mstartdive sequence (illustrative)

Depth shaped by the seafloor limit here (100 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 30, 2026

measured
Seafloor depth
100 m
Sea-surface temperature
11.9°C
Distance from shore
7.0 km

Across the residency · 24 sightings

measured
Seafloor depth
33 m – 155 m
Sea-surface temperature
10.3°C – 14.6°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 24 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.