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

Hobo – Residency

19th sighting in Chatham Strait
Fluke of Hobo
Hobo Confirmed in the catalog @6329
Jun 28 – Sep 25, 2023 · Chatham Strait

Chatham Strait · Jun – Sep 2023

96 m
Deepest dive
4:03
Longest dive
93
Dives
Sightings
10
Days between first and last sighting
89

Dive stats modelled within real depth limits — not measured

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SightingSeafloorSea tempDeepest dive (modelled)
Jun 28, 202339 m10.5°C20 m
Jul 12, 202359 m12.1°C50 m
Jul 14, 202342 m13.0°C32 m
Jul 15, 202368 m13.0°C56 m
Jul 20, 202348 m11.7°C43 m
Jul 22, 2023107 m15.0°C55 m
Jul 24, 202360 m12.2°C55 m
Aug 24, 2023113 m11.6°C96 m
Sep 19, 2023104 m9.8°C81 m
Sep 25, 202361 m10.4°C17 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
Jun 28, 2023 — seafloor 39 m (measured), deepest dive 20 m (modelled)Jun 28Jul 12, 2023 — seafloor 59 m (measured), deepest dive 50 m (modelled)Jul 12Jul 14, 2023 — seafloor 42 m (measured), deepest dive 32 m (modelled)Jul 14Jul 15, 2023 — seafloor 68 m (measured), deepest dive 56 m (modelled)Jul 15Jul 20, 2023 — seafloor 48 m (measured), deepest dive 43 m (modelled)Jul 20Jul 22, 2023 — seafloor 107 m (measured), deepest dive 55 m (modelled)Jul 22Jul 24, 2023 — seafloor 60 m (measured), deepest dive 55 m (modelled)Jul 24Aug 24, 2023 — seafloor 113 m (measured), deepest dive 96 m (modelled)Aug 24Sep 19, 2023 — seafloor 104 m (measured), deepest dive 81 m (modelled)Sep 19Sep 25, 2023 — seafloor 61 m (measured), deepest dive 17 m (modelled)Sep 25

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

Dives

96 m
Deepest dive
4:03
Longest dive
93
Dives
22 m
Avg dive depth
10
Sightings
89
Days first → last

Dive metrics are modelled within real depth limits — not measured

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Dive profile

modelled
05010096 mstartdive sequence (illustrative)

Depth shaped by the seafloor limit here (113 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 24, 2023

measured
Seafloor depth
113 m
Sea-surface temperature
11.6°C
Distance from shore
4.0 km

Across the residency · 10 sightings

measured
Seafloor depth
39 m – 113 m
Sea-surface temperature
9.8°C – 15.0°C
Distance from shore
1.0 km – 5.0 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 10 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.