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Salish Sea

Hemlock – Residency

122nd sighting in Salish Sea
Fluke of Hemlock
Hemlock Confirmed in the catalog @5001
May 24 – Oct 10, 2026 · Salish Sea

Eleven Summers Deep

Herring thick at the drop-offs again, whole summer of good company here.

164 m
Deepest dive
6:25
Longest dive
165
Dives
Sightings
9
Days between first and last sighting
138
Deepest dive on record
164 m · this residency

Dive stats modelled within real depth limits — not measured

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SightingSeafloorSea tempDeepest dive (modelled)
May 24, 2026138 m10.0°C103 m
Jul 3, 2026180 m13.1°C164 m
Jul 4, 2026160 m13.0°C80 m
Jul 26, 202681 m15.6°C60 m
Aug 8, 202674 m15.2°C43 m
Aug 15, 202693 m15.6°C64 m
Aug 21, 2026154 m14.9°C84 m
Aug 22, 2026111 m14.9°C52 m
Oct 10, 202655 m10.5°C38 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 24, 2026 — seafloor 138 m (measured), deepest dive 103 m (modelled)May 24Jul 3, 2026 — seafloor 180 m (measured), deepest dive 164 m (modelled)Jul 3Jul 4, 2026 — seafloor 160 m (measured), deepest dive 80 m (modelled)Jul 4Jul 26, 2026 — seafloor 81 m (measured), deepest dive 60 m (modelled)Jul 26Aug 8, 2026 — seafloor 74 m (measured), deepest dive 43 m (modelled)Aug 8Aug 15, 2026 — seafloor 93 m (measured), deepest dive 64 m (modelled)Aug 15Aug 21, 2026 — seafloor 154 m (measured), deepest dive 84 m (modelled)Aug 21Aug 22, 2026 — seafloor 111 m (measured), deepest dive 52 m (modelled)Aug 22Oct 10, 2026 — seafloor 55 m (measured), deepest dive 38 m (modelled)Oct 10

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

Dives

164 m
Deepest dive
6:25
Longest dive
165
Dives
26 m
Avg dive depth
9
Sightings
138
Days first → last

Dive metrics are modelled within real depth limits — not measured

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Dive profile

modelled
0100200164 mstartdive sequence (illustrative)

Depth shaped by the seafloor limit here (180 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 3, 2026

measured
Seafloor depth
180 m
Sea-surface temperature
13.1°C
Distance from shore
6.0 km

Across the residency · 9 sightings

measured
Seafloor depth
55 m – 180 m
Sea-surface temperature
10.0°C – 15.6°C
Distance from shore
2.0 km – 9.0 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 9 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.