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

Sigma – Residency

10th sighting in Gulf of Maine
Fluke of Sigma
Sigma Confirmed in the catalog @7336
Jun 25 – Aug 20, 2022 · Gulf of Maine

Gulf of Maine · Jun – Aug 2022

73 m
Deepest dive
2:52
Longest dive
52
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 25, 202278 m—69 m
Jul 16, 202298 m—73 m
Jul 31, 202284 m—32 m
Aug 20, 202273 m—54 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 25, 2022 — seafloor 78 m (measured), deepest dive 69 m (modelled)Jun 25Jul 16, 2022 — seafloor 98 m (measured), deepest dive 73 m (modelled)Jul 16Jul 31, 2022 — seafloor 84 m (measured), deepest dive 32 m (modelled)Jul 31Aug 20, 2022 — seafloor 73 m (measured), deepest dive 54 m (modelled)Aug 20

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

Dives

73 m
Deepest dive
2:52
Longest dive
52
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
05010073 mstartdive sequence (illustrative)

Depth shaped by the seafloor limit here (98 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 16, 2022

measured
Seafloor depth
98 m
Sea-surface temperature
—
Distance from shore
18.0 km

Across the residency · 4 sightings

measured
Seafloor depth
73 m – 98 m
Sea-surface temperature
—
Distance from shore
15.0 km – 18.0 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.