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

Pleats – Residency

17th sighting in Gulf of Maine
Fluke of Pleats
Pleats Confirmed in the catalog @16873
Aug 23 – Sep 12, 2026 · Gulf of Maine

Same Sandy Shallows, Fine Feeding

Two surfacings this stretch, both over banks I could find blind.

30 m
Deepest dive
1:41
Longest dive
38
Dives
Sightings
3
Days between first and last sighting
20

Dive stats modelled within real depth limits — not measured

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SightingSeafloorSea tempDeepest dive (modelled)
Aug 23, 202629 m20.5°C23 m
Aug 26, 202628 m20.2°C26 m
Sep 12, 202638 m—30 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
Aug 23, 2026 — seafloor 29 m (measured), deepest dive 23 m (modelled)Aug 23Aug 26, 2026 — seafloor 28 m (measured), deepest dive 26 m (modelled)Aug 26Sep 12, 2026 — seafloor 38 m (measured), deepest dive 30 m (modelled)Sep 12

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

Dives

30 m
Deepest dive
1:41
Longest dive
38
Dives
14 m
Avg dive depth
3
Sightings
20
Days first → last

Dive metrics are modelled within real depth limits — not measured

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Dive profile

modelled
0255030 mstartdive sequence (illustrative)

Depth shaped by the seafloor limit here (38 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 · Sep 12, 2026

measured
Seafloor depth
38 m
Sea-surface temperature
—
Distance from shore
12.0 km

Across the residency · 3 sightings

measured
Seafloor depth
28 m – 38 m
Sea-surface temperature
20.2°C – 20.5°C
Distance from shore
12.0 km – 25.0 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 3 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.