Activity map — real sighting points on an OpenStreetMap basemap © OpenStreetMap contributors
Gulf of Maine

Quarternote – Residency

9th sighting in Gulf of Maine
Fluke of Quarternote
Quarternote Confirmed in the catalog @19685
Jul 9 – Aug 17, 2023 · Gulf of Maine

Gulf of Maine · Jul – Aug 2023

142 m
Deepest dive
5:24
Longest dive
75
Dives
Sightings
6
Days between first and last sighting
39
Deepest dive on record
142 m · this residency

Dive stats modelled within real depth limits — not measured

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SightingSeafloorSea tempDeepest dive (modelled)
Jul 9, 2023106 m—25 m
Jul 10, 2023119 m—41 m
Jul 20, 2023128 m—61 m
Jul 22, 2023123 m—82 m
Jul 29, 2023174 m—142 m
Aug 17, 2023113 m—33 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 9, 2023 — seafloor 106 m (measured), deepest dive 25 m (modelled)Jul 9Jul 10, 2023 — seafloor 119 m (measured), deepest dive 41 m (modelled)Jul 10Jul 20, 2023 — seafloor 128 m (measured), deepest dive 61 m (modelled)Jul 20Jul 22, 2023 — seafloor 123 m (measured), deepest dive 82 m (modelled)Jul 22Jul 29, 2023 — seafloor 174 m (measured), deepest dive 142 m (modelled)Jul 29Aug 17, 2023 — seafloor 113 m (measured), deepest dive 33 m (modelled)Aug 17

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

Dives

142 m
Deepest dive
5:24
Longest dive
75
Dives
25 m
Avg dive depth
6
Sightings
39
Days first → last

Dive metrics are modelled within real depth limits — not measured

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Dive profile

modelled
075150142 mstartdive sequence (illustrative)

Depth shaped by the seafloor limit here (174 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 29, 2023

measured
Seafloor depth
174 m
Sea-surface temperature
—
Distance from shore
17.0 km

Across the residency · 6 sightings

measured
Seafloor depth
106 m – 174 m
Sea-surface temperature
—
Distance from shore
4.0 km – 19.0 km

Sources: GEBCO seafloor grid · PacIOOS coastline distance

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

Source records

This activity is assembled from 6 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.