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

Sedge – Residency

12th sighting in Gulf of Maine
Fluke of Sedge
Sedge Confirmed in the catalog @7334
Jul 6 – Sep 18, 2021 · Gulf of Maine

Gulf of Maine · Jul – Sep 2021

63 m
Deepest dive
2:37
Longest dive
71
Dives
Sightings
5
Days between first and last sighting
74

Dive stats modelled within real depth limits — not measured

Get actual dive data with Risa Deep →
SightingSeafloorSea tempDeepest dive (modelled)
Jul 6, 202152 m—36 m
Jul 11, 2021115 m—63 m
Jul 12, 202147 m—29 m
Jul 18, 202146 m—42 m
Sep 18, 2021130 m—38 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 6, 2021 — seafloor 52 m (measured), deepest dive 36 m (modelled)Jul 6Jul 11, 2021 — seafloor 115 m (measured), deepest dive 63 m (modelled)Jul 11Jul 12, 2021 — seafloor 47 m (measured), deepest dive 29 m (modelled)Jul 12Jul 18, 2021 — seafloor 46 m (measured), deepest dive 42 m (modelled)Jul 18Sep 18, 2021 — seafloor 130 m (measured), deepest dive 38 m (modelled)Sep 18

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

Dives

63 m
Deepest dive
2:37
Longest dive
71
Dives
19 m
Avg dive depth
5
Sightings
74
Days first → last

Dive metrics are modelled within real depth limits — not measured

Get actual dive data with Risa Deep →

Dive profile

modelled
05010063 mstartdive sequence (illustrative)

Depth shaped by the seafloor limit here (115 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.

Unlock with Risa Deep

Place

Where this happened · Jul 11, 2021

measured
Seafloor depth
115 m
Sea-surface temperature
—
Distance from shore
22.0 km

Across the residency · 5 sightings

measured
Seafloor depth
46 m – 130 m
Sea-surface temperature
—
Distance from shore
7.0 km – 22.0 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 5 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).

Happywhale runs on donations: support Happywhale →

Breach is an independent project. It is not affiliated with, nor endorsed by, Happywhale or GBIF.