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Chatham Strait

Sherona – Residency

29th sighting in Chatham Strait
Fluke of Sherona
Sherona Confirmed in the catalog @6441
Apr 6 – Sep 13, 2024 · Chatham Strait

Chatham Strait · Apr – Sep 2024

96 m
Deepest dive
5:07
Longest dive
175
Dives
Sightings
14
Days between first and last sighting
160

Dive stats modelled within real depth limits — not measured

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SightingSeafloorSea tempDeepest dive (modelled)
Apr 6, 2024258 m5.2°C79 m
Jun 16, 2024116 m10.0°C68 m
Jun 20, 202477 m10.8°C57 m
Jun 30, 202478 m11.3°C71 m
Jul 3, 202432 m10.9°C28 m
Jul 5, 202432 m10.2°C16 m
Jul 16, 202420 m10.9°C18 m
Jul 16, 202422 m10.8°C20 m
Jul 22, 2024305 m13.1°C70 m
Jul 30, 2024301 m11.6°C96 m
Aug 3, 2024165 m12.9°C96 m
Aug 15, 2024-2 m13.6°C—
Sep 11, 2024160 m12.4°C90 m
Sep 13, 2024102 m12.1°C93 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
Apr 6, 2024 — seafloor 258 m (measured), deepest dive 79 m (modelled)Apr 6Jun 16, 2024 — seafloor 116 m (measured), deepest dive 68 m (modelled)Jun 20, 2024 — seafloor 77 m (measured), deepest dive 57 m (modelled)Jun 30, 2024 — seafloor 78 m (measured), deepest dive 71 m (modelled)Jun 30Jul 3, 2024 — seafloor 32 m (measured), deepest dive 28 m (modelled)Jul 5, 2024 — seafloor 32 m (measured), deepest dive 16 m (modelled)Jul 16, 2024 — seafloor 20 m (measured), deepest dive 18 m (modelled)Jul 16Jul 16, 2024 — seafloor 22 m (measured), deepest dive 20 m (modelled)Jul 22, 2024 — seafloor 305 m (measured), deepest dive 70 m (modelled)Jul 30, 2024 — seafloor 301 m (measured), deepest dive 96 m (modelled)Jul 30Aug 3, 2024 — seafloor 165 m (measured), deepest dive 96 m (modelled)Aug 15, 2024 — seafloor -2 m (measured), deepest dive — (modelled)Sep 11, 2024 — seafloor 160 m (measured), deepest dive 90 m (modelled)Sep 11Sep 13, 2024 — seafloor 102 m (measured), deepest dive 93 m (modelled)

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

Dives

96 m
Deepest dive
5:07
Longest dive
175
Dives
25 m
Avg dive depth
14
Sightings
160
Days first → last

Dive metrics are modelled within real depth limits — not measured

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Dive profile

modelled
05010096 mstartdive sequence (illustrative)

Depth shaped by the seafloor limit here (301 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 · Jul 30, 2024

measured
Seafloor depth
301 m
Sea-surface temperature
11.6°C
Distance from shore
1.0 km

Across the residency · 14 sightings

measured
Seafloor depth
-2 m – 305 m
Sea-surface temperature
5.2°C – 13.6°C
Distance from shore
1.0 km – 9.0 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 14 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.