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Salish Sea

Split Fin – Residency

114th sighting in Salish Sea
Fluke of Split Fin
Split Fin Confirmed in the catalog @4083
May 23 – Sep 29, 2023 · Salish Sea

Summer in the Sound

Four months of perfect feeding, coming back again and again to these familiar waters.

125 m
Deepest dive
5:11
Longest dive
346
Dives
Sightings
31
Days between first and last sighting
129

Dive stats modelled within real depth limits — not measured

Get actual dive data with Risa Deep →
SightingSeafloorSea tempDeepest dive (modelled)
May 23, 202375 m9.6°C54 m
May 26, 202388 m10.7°C69 m
May 27, 2023124 m10.7°C52 m
Jun 3, 202342 m10.9°C31 m
Jun 3, 202316 m11.3°C14 m
Jun 6, 2023204 m11.8°C83 m
Jun 12, 2023204 m12.6°C95 m
Jun 14, 202383 m11.2°C67 m
Jun 16, 202319 m11.1°C13 m
Jun 21, 202314 m12.3°C11 m
Jun 21, 202392 m11.9°C48 m
Jun 22, 202378 m11.2°C64 m
Jun 24, 2023204 m12.7°C94 m
Jun 30, 202366 m11.2°C52 m
Jul 3, 202375 m11.5°C52 m
Jul 7, 202388 m10.9°C63 m
Jul 8, 2023135 m10.9°C37 m
Jul 8, 2023167 m10.9°C35 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 23, 2023 — seafloor 75 m (measured), deepest dive 54 m (modelled)May 23May 26, 2023 — seafloor 88 m (measured), deepest dive 69 m (modelled)May 27, 2023 — seafloor 124 m (measured), deepest dive 52 m (modelled)Jun 3, 2023 — seafloor 42 m (measured), deepest dive 31 m (modelled)Jun 3, 2023 — seafloor 16 m (measured), deepest dive 14 m (modelled)Jun 6, 2023 — seafloor 204 m (measured), deepest dive 83 m (modelled)Jun 12, 2023 — seafloor 204 m (measured), deepest dive 95 m (modelled)Jun 12Jun 14, 2023 — seafloor 83 m (measured), deepest dive 67 m (modelled)Jun 16, 2023 — seafloor 19 m (measured), deepest dive 13 m (modelled)Jun 21, 2023 — seafloor 14 m (measured), deepest dive 11 m (modelled)Jun 21, 2023 — seafloor 92 m (measured), deepest dive 48 m (modelled)Jun 22, 2023 — seafloor 78 m (measured), deepest dive 64 m (modelled)Jun 24, 2023 — seafloor 204 m (measured), deepest dive 94 m (modelled)Jun 24Jun 30, 2023 — seafloor 66 m (measured), deepest dive 52 m (modelled)Jul 3, 2023 — seafloor 75 m (measured), deepest dive 52 m (modelled)Jul 7, 2023 — seafloor 88 m (measured), deepest dive 63 m (modelled)Jul 8, 2023 — seafloor 135 m (measured), deepest dive 37 m (modelled)Jul 8, 2023 — seafloor 167 m (measured), deepest dive 35 m (modelled)Jul 9, 2023 — seafloor 124 m (measured), deepest dive 89 m (modelled)Jul 9Jul 11, 2023 — seafloor 135 m (measured), deepest dive 61 m (modelled)Jul 12, 2023 — seafloor 92 m (measured), deepest dive 57 m (modelled)Jul 12, 2023 — seafloor 74 m (measured), deepest dive 54 m (modelled)Jul 14, 2023 — seafloor 40 m (measured), deepest dive 30 m (modelled)Jul 25, 2023 — seafloor 47 m (measured), deepest dive 35 m (modelled)Jul 28, 2023 — seafloor 95 m (measured), deepest dive 17 m (modelled)Jul 28Jul 29, 2023 — seafloor 70 m (measured), deepest dive 63 m (modelled)Jul 30, 2023 — seafloor 43 m (measured), deepest dive 38 m (modelled)Aug 30, 2023 — seafloor 143 m (measured), deepest dive 86 m (modelled)Sep 10, 2023 — seafloor 391 m (measured), deepest dive 94 m (modelled)Sep 15, 2023 — seafloor 405 m (measured), deepest dive 68 m (modelled)Sep 29, 2023 — seafloor 189 m (measured), deepest dive 125 m (modelled)Sep 29

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

Dives

125 m
Deepest dive
5:11
Longest dive
346
Dives
24 m
Avg dive depth
31
Sightings
129
Days first → last

Dive metrics are modelled within real depth limits — not measured

Get actual dive data with Risa Deep →

Dive profile

modelled
075150125 mstartdive sequence (illustrative)

Depth shaped by the seafloor limit here (189 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 · Sep 29, 2023

measured
Seafloor depth
189 m
Sea-surface temperature
13.1°C
Distance from shore
8.0 km

Across the residency · 31 sightings

measured
Seafloor depth
14 m – 405 m
Sea-surface temperature
9.6°C – 17.7°C
Distance from shore
1.0 km – 13.0 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 31 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.