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Sitka Sound & Outer Baranof

Sherona – Residency

12th sighting in Sitka Sound & Outer Baranof
Fluke of Sherona
Sherona Confirmed in the catalog @6441
Mar 28 – Aug 3, 2023 · Sitka Sound & Outer Baranof

Sitka Sound & Outer Baranof · Mar – Aug 2023

135 m
Deepest dive
4:45
Longest dive
208
Dives
Sightings
15
Days between first and last sighting
128

Dive stats modelled within real depth limits — not measured

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SightingSeafloorSea tempDeepest dive (modelled)
Mar 28, 202348 m4.5°C27 m
Mar 29, 202351 m4.4°C45 m
Mar 29, 202378 m4.5°C46 m
Mar 29, 202348 m4.5°C39 m
Mar 30, 202375 m4.4°C58 m
Apr 2, 202373 m4.7°C48 m
Apr 2, 202349 m4.8°C41 m
Apr 2, 202359 m4.8°C42 m
Apr 2, 202360 m4.8°C29 m
Apr 3, 202346 m4.9°C42 m
Apr 6, 202332 m5.5°C28 m
Apr 7, 202325 m5.1°C16 m
May 1, 2023137 m5.9°C55 m
Jun 21, 202362 m9.8°C42 m
Aug 3, 2023241 m15.0°C135 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
Mar 28, 2023 — seafloor 48 m (measured), deepest dive 27 m (modelled)Mar 28Mar 29, 2023 — seafloor 51 m (measured), deepest dive 45 m (modelled)Mar 29, 2023 — seafloor 78 m (measured), deepest dive 46 m (modelled)Mar 29, 2023 — seafloor 48 m (measured), deepest dive 39 m (modelled)Mar 29Mar 30, 2023 — seafloor 75 m (measured), deepest dive 58 m (modelled)Apr 2, 2023 — seafloor 73 m (measured), deepest dive 48 m (modelled)Apr 2, 2023 — seafloor 49 m (measured), deepest dive 41 m (modelled)Apr 2Apr 2, 2023 — seafloor 59 m (measured), deepest dive 42 m (modelled)Apr 2, 2023 — seafloor 60 m (measured), deepest dive 29 m (modelled)Apr 3, 2023 — seafloor 46 m (measured), deepest dive 42 m (modelled)Apr 3Apr 6, 2023 — seafloor 32 m (measured), deepest dive 28 m (modelled)Apr 7, 2023 — seafloor 25 m (measured), deepest dive 16 m (modelled)May 1, 2023 — seafloor 137 m (measured), deepest dive 55 m (modelled)May 1Jun 21, 2023 — seafloor 62 m (measured), deepest dive 42 m (modelled)Aug 3, 2023 — seafloor 241 m (measured), deepest dive 135 m (modelled)

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

Dives

135 m
Deepest dive
4:45
Longest dive
208
Dives
19 m
Avg dive depth
15
Sightings
128
Days first → last

Dive metrics are modelled within real depth limits — not measured

Get actual dive data with Risa Deep →

Dive profile

modelled
075150135 mstartdive sequence (illustrative)

Depth shaped by the seafloor limit here (241 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 · Aug 3, 2023

measured
Seafloor depth
241 m
Sea-surface temperature
15.0°C
Distance from shore
6.0 km

Across the residency · 15 sightings

measured
Seafloor depth
25 m – 241 m
Sea-surface temperature
4.4°C – 15.0°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 15 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.