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Salish Sea

Split Fin – Residency

131st sighting in Salish Sea
Fluke of Split Fin
Split Fin Confirmed in the catalog @4083
May 11 – Oct 6, 2024 · Salish Sea

Home Waters Summer

Five months in my beloved Salish Sea, returning again and again to these familiar depths.

120 m
Deepest dive
4:54
Longest dive
222
Dives
Sightings
17
Days between first and last sighting
147

Dive stats modelled within real depth limits — not measured

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SightingSeafloorSea tempDeepest dive (modelled)
May 11, 202461 m10.1°C51 m
May 11, 202462 m10.1°C56 m
May 20, 202469 m9.7°C28 m
Jun 6, 2024324 m12.6°C81 m
Jun 14, 20243 m13.7°C3 m
Jun 22, 202487 m12.7°C61 m
Jun 30, 2024196 m10.6°C120 m
Jun 30, 202491 m10.8°C63 m
Jun 30, 202483 m10.7°C68 m
Jul 1, 202486 m10.9°C51 m
Jul 1, 202489 m10.8°C31 m
Jul 2, 202493 m10.9°C79 m
Aug 4, 2024275 m19.5°C57 m
Sep 3, 2024182 m17.6°C28 m
Sep 4, 202434 m18.2°C28 m
Sep 12, 202483 m15.1°C61 m
Oct 6, 20249 m11.9°C8 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 11, 2024 — seafloor 61 m (measured), deepest dive 51 m (modelled)May 11May 11, 2024 — seafloor 62 m (measured), deepest dive 56 m (modelled)May 20, 2024 — seafloor 69 m (measured), deepest dive 28 m (modelled)Jun 6, 2024 — seafloor 324 m (measured), deepest dive 81 m (modelled)Jun 6Jun 14, 2024 — seafloor 3 m (measured), deepest dive 3 m (modelled)Jun 22, 2024 — seafloor 87 m (measured), deepest dive 61 m (modelled)Jun 30, 2024 — seafloor 196 m (measured), deepest dive 120 m (modelled)Jun 30Jun 30, 2024 — seafloor 91 m (measured), deepest dive 63 m (modelled)Jun 30, 2024 — seafloor 83 m (measured), deepest dive 68 m (modelled)Jul 1, 2024 — seafloor 86 m (measured), deepest dive 51 m (modelled)Jul 1Jul 1, 2024 — seafloor 89 m (measured), deepest dive 31 m (modelled)Jul 2, 2024 — seafloor 93 m (measured), deepest dive 79 m (modelled)Aug 4, 2024 — seafloor 275 m (measured), deepest dive 57 m (modelled)Aug 4Sep 3, 2024 — seafloor 182 m (measured), deepest dive 28 m (modelled)Sep 4, 2024 — seafloor 34 m (measured), deepest dive 28 m (modelled)Sep 12, 2024 — seafloor 83 m (measured), deepest dive 61 m (modelled)Sep 12Oct 6, 2024 — seafloor 9 m (measured), deepest dive 8 m (modelled)

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

Dives

120 m
Deepest dive
4:54
Longest dive
222
Dives
22 m
Avg dive depth
17
Sightings
147
Days first → last

Dive metrics are modelled within real depth limits — not measured

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Dive profile

modelled
075150120 mstartdive sequence (illustrative)

Depth shaped by the seafloor limit here (196 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, 2024

measured
Seafloor depth
196 m
Sea-surface temperature
10.6°C
Distance from shore
6.0 km

Across the residency · 17 sightings

measured
Seafloor depth
3 m – 324 m
Sea-surface temperature
9.7°C – 19.5°C
Distance from shore
1.0 km – 11.0 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 17 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.