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Salish Sea

Split Fin – Residency

164th sighting in Salish Sea
Fluke of Split Fin
Split Fin Confirmed in the catalog @4083
May 6 – Aug 26, 2026 · Salish Sea

Salish Sea Summer Stretch

Whole summer parked in these waters, lenses catching me every turn.

117 m
Deepest dive
5:29
Longest dive
150
Dives
Sightings
15
Days between first and last sighting
112

Dive stats modelled within real depth limits — not measured

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SightingSeafloorSea tempDeepest dive (modelled)
May 6, 202662 m10.1°C42 m
May 9, 202635 m9.9°C28 m
May 24, 202694 m10.5°C69 m
May 28, 202619 m10.8°C16 m
Jun 4, 202677 m10.7°C54 m
Jun 5, 202690 m10.7°C37 m
Jul 3, 2026131 m13.1°C91 m
Jul 15, 202675 m16.0°C66 m
Jul 17, 2026124 m15.0°C48 m
Jul 19, 2026103 m13.8°C91 m
Aug 4, 2026162 m15.2°C101 m
Aug 15, 2026113 m16.3°C39 m
Aug 19, 2026150 m15.7°C73 m
Aug 24, 202695 m16.0°C69 m
Aug 26, 2026171 m15.6°C117 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 6, 2026 — seafloor 62 m (measured), deepest dive 42 m (modelled)May 6May 9, 2026 — seafloor 35 m (measured), deepest dive 28 m (modelled)May 24, 2026 — seafloor 94 m (measured), deepest dive 69 m (modelled)May 28, 2026 — seafloor 19 m (measured), deepest dive 16 m (modelled)May 28Jun 4, 2026 — seafloor 77 m (measured), deepest dive 54 m (modelled)Jun 5, 2026 — seafloor 90 m (measured), deepest dive 37 m (modelled)Jul 3, 2026 — seafloor 131 m (measured), deepest dive 91 m (modelled)Jul 3Jul 15, 2026 — seafloor 75 m (measured), deepest dive 66 m (modelled)Jul 17, 2026 — seafloor 124 m (measured), deepest dive 48 m (modelled)Jul 19, 2026 — seafloor 103 m (measured), deepest dive 91 m (modelled)Jul 19Aug 4, 2026 — seafloor 162 m (measured), deepest dive 101 m (modelled)Aug 15, 2026 — seafloor 113 m (measured), deepest dive 39 m (modelled)Aug 19, 2026 — seafloor 150 m (measured), deepest dive 73 m (modelled)Aug 19Aug 24, 2026 — seafloor 95 m (measured), deepest dive 69 m (modelled)Aug 26, 2026 — seafloor 171 m (measured), deepest dive 117 m (modelled)

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

Dives

117 m
Deepest dive
5:29
Longest dive
150
Dives
24 m
Avg dive depth
15
Sightings
112
Days first → last

Dive metrics are modelled within real depth limits — not measured

Get actual dive data with Risa Deep →

Dive profile

modelled
075150117 mstartdive sequence (illustrative)

Depth shaped by the seafloor limit here (171 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 26, 2026

measured
Seafloor depth
171 m
Sea-surface temperature
15.6°C
Distance from shore
2.0 km

Across the residency · 15 sightings

measured
Seafloor depth
19 m – 171 m
Sea-surface temperature
9.9°C – 16.3°C
Distance from shore
1.0 km – 12.0 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.