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

Opal – Residency

4th sighting in Gulf of Maine
Fluke of Opal
Opal Confirmed in the catalog @45240
Jun 21 – Aug 16, 2025 · Gulf of Maine

Gulf of Maine · Jun – Aug 2025

69 m
Deepest dive
3:11
Longest dive
41
Dives
Sightings
4
Days between first and last sighting
57

Dive stats modelled within real depth limits — not measured

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SightingSeafloorSea tempDeepest dive (modelled)
Jun 21, 202579 m—36 m
Jul 8, 202585 m—69 m
Aug 9, 202587 m—68 m
Aug 16, 202555 m—47 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 21, 2025 — seafloor 79 m (measured), deepest dive 36 m (modelled)Jun 21Jul 8, 2025 — seafloor 85 m (measured), deepest dive 69 m (modelled)Jul 8Aug 9, 2025 — seafloor 87 m (measured), deepest dive 68 m (modelled)Aug 9Aug 16, 2025 — seafloor 55 m (measured), deepest dive 47 m (modelled)Aug 16

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

Dives

69 m
Deepest dive
3:11
Longest dive
41
Dives
25 m
Avg dive depth
4
Sightings
57
Days first → last

Dive metrics are modelled within real depth limits — not measured

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Dive profile

modelled
05010069 mstartdive sequence (illustrative)

Depth shaped by the seafloor limit here (85 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 8, 2025

measured
Seafloor depth
85 m
Sea-surface temperature
—
Distance from shore
21.0 km

Across the residency · 4 sightings

measured
Seafloor depth
55 m – 87 m
Sea-surface temperature
—
Distance from shore
21.0 km – 28.0 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.