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Activity map — real sighting points on an OpenStreetMap basemap © OpenStreetMap contributors
Clarence Strait

Halo – Residency

24th sighting in Clarence Strait
Fluke of Halo
Halo Confirmed in the catalog @24665
May 22 – Oct 28, 2025 · Clarence Strait

Clarence Strait · May – Oct 2025

151 m
Deepest dive
4:30
Longest dive
107
Dives
Sightings
9
Days between first and last sighting
159
Deepest dive on record
151 m · this residency

Dive stats modelled within real depth limits — not measured

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SightingSeafloorSea tempDeepest dive (modelled)
May 22, 202584 m8.6°C63 m
Jun 13, 202575 m10.8°C52 m
Jul 4, 202539 m12.2°C28 m
Jul 12, 2025192 m12.9°C151 m
Jul 13, 202513 m13.1°C10 m
Jul 14, 202521 m13.1°C17 m
Aug 12, 202517 m13.8°C15 m
Aug 29, 202529 m15.0°C21 m
Oct 28, 202583 m9.0°C23 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 22, 2025 — seafloor 84 m (measured), deepest dive 63 m (modelled)May 22Jun 13, 2025 — seafloor 75 m (measured), deepest dive 52 m (modelled)Jun 13Jul 4, 2025 — seafloor 39 m (measured), deepest dive 28 m (modelled)Jul 4Jul 12, 2025 — seafloor 192 m (measured), deepest dive 151 m (modelled)Jul 12Jul 13, 2025 — seafloor 13 m (measured), deepest dive 10 m (modelled)Jul 13Jul 14, 2025 — seafloor 21 m (measured), deepest dive 17 m (modelled)Jul 14Aug 12, 2025 — seafloor 17 m (measured), deepest dive 15 m (modelled)Aug 12Aug 29, 2025 — seafloor 29 m (measured), deepest dive 21 m (modelled)Aug 29Oct 28, 2025 — seafloor 83 m (measured), deepest dive 23 m (modelled)Oct 28

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

Dives

151 m
Deepest dive
4:30
Longest dive
107
Dives
15 m
Avg dive depth
9
Sightings
159
Days first → last

Dive metrics are modelled within real depth limits — not measured

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Dive profile

modelled
0100200151 mstartdive sequence (illustrative)

Depth shaped by the seafloor limit here (192 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 12, 2025

measured
Seafloor depth
192 m
Sea-surface temperature
12.9°C
Distance from shore
2.0 km

Across the residency · 9 sightings

measured
Seafloor depth
13 m – 192 m
Sea-surface temperature
8.6°C – 15.0°C
Distance from shore
1.0 km – 3.0 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.