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Salish Sea

Hemlock – Residency

75th sighting in Salish Sea
Fluke of Hemlock
Hemlock Confirmed in the catalog @5001
Jul 15 – Oct 26, 2023 · Salish Sea

Salish Sea · Jul – Oct 2023

107 m
Deepest dive
3:47
Longest dive
392
Dives
Sightings
34
Days between first and last sighting
103

Dive stats modelled within real depth limits — not measured

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SightingSeafloorSea tempDeepest dive (modelled)
Jul 15, 202396 m11.8°C77 m
Jul 18, 2023134 m11.6°C65 m
Jul 23, 2023120 m12.0°C65 m
Jul 26, 2023104 m12.1°C93 m
Jul 27, 2023138 m12.4°C74 m
Jul 28, 2023109 m12.4°C98 m
Jul 28, 202395 m12.4°C53 m
Jul 29, 2023107 m12.3°C34 m
Jul 30, 2023138 m11.8°C88 m
Aug 10, 202395 m12.3°C83 m
Aug 13, 2023139 m12.5°C72 m
Aug 13, 202395 m12.6°C13 m
Aug 15, 202395 m13.2°C45 m
Aug 17, 2023158 m12.8°C77 m
Aug 18, 2023122 m12.9°C107 m
Aug 20, 202395 m13.0°C65 m
Aug 21, 2023120 m12.6°C36 m
Aug 22, 2023106 m12.6°C74 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
Jul 15, 2023 — seafloor 96 m (measured), deepest dive 77 m (modelled)Jul 15Jul 18, 2023 — seafloor 134 m (measured), deepest dive 65 m (modelled)Jul 23, 2023 — seafloor 120 m (measured), deepest dive 65 m (modelled)Jul 26, 2023 — seafloor 104 m (measured), deepest dive 93 m (modelled)Jul 27, 2023 — seafloor 138 m (measured), deepest dive 74 m (modelled)Jul 28, 2023 — seafloor 109 m (measured), deepest dive 98 m (modelled)Jul 28, 2023 — seafloor 95 m (measured), deepest dive 53 m (modelled)Jul 28Jul 29, 2023 — seafloor 107 m (measured), deepest dive 34 m (modelled)Jul 30, 2023 — seafloor 138 m (measured), deepest dive 88 m (modelled)Aug 10, 2023 — seafloor 95 m (measured), deepest dive 83 m (modelled)Aug 13, 2023 — seafloor 139 m (measured), deepest dive 72 m (modelled)Aug 13, 2023 — seafloor 95 m (measured), deepest dive 13 m (modelled)Aug 15, 2023 — seafloor 95 m (measured), deepest dive 45 m (modelled)Aug 15Aug 17, 2023 — seafloor 158 m (measured), deepest dive 77 m (modelled)Aug 18, 2023 — seafloor 122 m (measured), deepest dive 107 m (modelled)Aug 20, 2023 — seafloor 95 m (measured), deepest dive 65 m (modelled)Aug 21, 2023 — seafloor 120 m (measured), deepest dive 36 m (modelled)Aug 22, 2023 — seafloor 106 m (measured), deepest dive 74 m (modelled)Aug 24, 2023 — seafloor 117 m (measured), deepest dive 28 m (modelled)Aug 24Aug 25, 2023 — seafloor 133 m (measured), deepest dive 20 m (modelled)Aug 27, 2023 — seafloor 79 m (measured), deepest dive 60 m (modelled)Aug 28, 2023 — seafloor 82 m (measured), deepest dive 54 m (modelled)Aug 30, 2023 — seafloor 100 m (measured), deepest dive 71 m (modelled)Aug 30, 2023 — seafloor 94 m (measured), deepest dive 39 m (modelled)Sep 1, 2023 — seafloor 27 m (measured), deepest dive 25 m (modelled)Sep 1Sep 3, 2023 — seafloor 72 m (measured), deepest dive 49 m (modelled)Sep 4, 2023 — seafloor 131 m (measured), deepest dive 47 m (modelled)Sep 11, 2023 — seafloor 144 m (measured), deepest dive 83 m (modelled)Sep 17, 2023 — seafloor 109 m (measured), deepest dive 89 m (modelled)Sep 17, 2023 — seafloor 31 m (measured), deepest dive 17 m (modelled)Sep 30, 2023 — seafloor 46 m (measured), deepest dive 42 m (modelled)Sep 30Oct 12, 2023 — seafloor 37 m (measured), deepest dive 33 m (modelled)Oct 15, 2023 — seafloor 9 m (measured), deepest dive 8 m (modelled)Oct 26, 2023 — seafloor 125 m (measured), deepest dive 73 m (modelled)

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

Dives

107 m
Deepest dive
3:47
Longest dive
392
Dives
24 m
Avg dive depth
34
Sightings
103
Days first → last

Dive metrics are modelled within real depth limits — not measured

Get actual dive data with Risa Deep →

Dive profile

modelled
075150107 mstartdive sequence (illustrative)

Depth shaped by the seafloor limit here (122 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 18, 2023

measured
Seafloor depth
122 m
Sea-surface temperature
12.9°C
Distance from shore
8.0 km

Across the residency · 34 sightings

measured
Seafloor depth
9 m – 158 m
Sea-surface temperature
10.1°C – 13.7°C
Distance from shore
3.0 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 34 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.