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

Crossbeam – Residency

16th sighting in Gulf of Maine
Fluke of Crossbeam
Crossbeam Confirmed in the catalog @12713
Aug 23 – Sep 13, 2026 · Gulf of Maine

Late Summer, Green Water

Rolled up through my favorite slick, feed's good, boats keep finding me.

46 m
Deepest dive
2:26
Longest dive
43
Dives
Sightings
4
Days between first and last sighting
21
Deepest dive on record
46 m · this residency

Dive stats modelled within real depth limits — not measured

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SightingSeafloorSea tempDeepest dive (modelled)
Aug 23, 202646 m20.6°C42 m
Sep 8, 202646 m19.0°C37 m
Sep 9, 202638 m19.3°C34 m
Sep 13, 202663 m—46 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 46 m (measured), deepest dive 42 m (modelled)Aug 23Sep 8, 2026 — seafloor 46 m (measured), deepest dive 37 m (modelled)Sep 8Sep 9, 2026 — seafloor 38 m (measured), deepest dive 34 m (modelled)Sep 9Sep 13, 2026 — seafloor 63 m (measured), deepest dive 46 m (modelled)Sep 13

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

Dives

46 m
Deepest dive
2:26
Longest dive
43
Dives
20 m
Avg dive depth
4
Sightings
21
Days first → last

Dive metrics are modelled within real depth limits — not measured

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Dive profile

modelled
0255046 mstartdive sequence (illustrative)

Depth shaped by the seafloor limit here (63 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 13, 2026

measured
Seafloor depth
63 m
Sea-surface temperature
—
Distance from shore
20.0 km

Across the residency · 4 sightings

measured
Seafloor depth
38 m – 63 m
Sea-surface temperature
19.0°C – 20.6°C
Distance from shore
9.0 km – 20.0 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 4 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.