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Salish Sea

Split Fluke – Residency

70th sighting in Salish Sea
Fluke of Split Fluke
Split Fluke Confirmed in the catalog @3534
May 30 – Oct 31, 2023 · Salish Sea

Summer in the Salish

Five months in familiar waters, watching my youngest learn the currents.

140 m
Deepest dive
4:19
Longest dive
161
Dives
Sightings
13
Days between first and last sighting
155

Dive stats modelled within real depth limits — not measured

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SightingSeafloorSea tempDeepest dive (modelled)
May 30, 202395 m11.2°C49 m
Jul 2, 2023176 m10.9°C48 m
Jul 5, 2023174 m11.4°C140 m
Jul 10, 2023131 m11.5°C61 m
Jul 27, 2023184 m12.3°C85 m
Aug 21, 2023320 m17.1°C70 m
Aug 30, 2023148 m17.5°C99 m
Sep 1, 20234 m16.5°C4 m
Sep 7, 2023224 m16.7°C104 m
Sep 8, 2023173 m16.6°C29 m
Sep 9, 202338 m17.0°C30 m
Sep 15, 2023405 m17.4°C83 m
Oct 31, 2023128 m10.1°C69 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
May 30, 2023 — seafloor 95 m (measured), deepest dive 49 m (modelled)May 30Jul 2, 2023 — seafloor 176 m (measured), deepest dive 48 m (modelled)Jul 5, 2023 — seafloor 174 m (measured), deepest dive 140 m (modelled)Jul 10, 2023 — seafloor 131 m (measured), deepest dive 61 m (modelled)Jul 10Jul 27, 2023 — seafloor 184 m (measured), deepest dive 85 m (modelled)Aug 21, 2023 — seafloor 320 m (measured), deepest dive 70 m (modelled)Aug 30, 2023 — seafloor 148 m (measured), deepest dive 99 m (modelled)Aug 30Sep 1, 2023 — seafloor 4 m (measured), deepest dive 4 m (modelled)Sep 7, 2023 — seafloor 224 m (measured), deepest dive 104 m (modelled)Sep 8, 2023 — seafloor 173 m (measured), deepest dive 29 m (modelled)Sep 8Sep 9, 2023 — seafloor 38 m (measured), deepest dive 30 m (modelled)Sep 15, 2023 — seafloor 405 m (measured), deepest dive 83 m (modelled)Oct 31, 2023 — seafloor 128 m (measured), deepest dive 69 m (modelled)Oct 31

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

Dives

140 m
Deepest dive
4:19
Longest dive
161
Dives
25 m
Avg dive depth
13
Sightings
155
Days first → last

Dive metrics are modelled within real depth limits — not measured

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Dive profile

modelled
075150140 mstartdive sequence (illustrative)

Depth shaped by the seafloor limit here (174 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 5, 2023

measured
Seafloor depth
174 m
Sea-surface temperature
11.4°C
Distance from shore
7.0 km

Across the residency · 13 sightings

measured
Seafloor depth
4 m – 405 m
Sea-surface temperature
10.1°C – 17.5°C
Distance from shore
1.0 km – 10.0 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 13 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.