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

Gremlin – Residency

10th sighting in Gulf of Maine
Fluke of Gremlin
Gremlin Confirmed in the catalog @7694
Jul 11 – Oct 12, 2026 · Gulf of Maine

Herring Weather, Every Day

Green water, full belly, cameras clicking away — good stretch.

69 m
Deepest dive
3:16
Longest dive
122
Dives
Sightings
9
Days between first and last sighting
93

Dive stats modelled within real depth limits — not measured

Get actual dive data with Risa Deep →
SightingSeafloorSea tempDeepest dive (modelled)
Jul 11, 202651 m14.4°C23 m
Jul 11, 202642 m14.5°C34 m
Jul 12, 202652 m14.4°C44 m
Jul 15, 202650 m14.2°C44 m
Aug 7, 2026107 m15.0°C45 m
Aug 9, 202625 m17.8°C19 m
Aug 21, 202680 m15.3°C69 m
Sep 26, 202686 m—63 m
Oct 12, 202627 m—22 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 11, 2026 — seafloor 51 m (measured), deepest dive 23 m (modelled)Jul 11Jul 11, 2026 — seafloor 42 m (measured), deepest dive 34 m (modelled)Jul 11Jul 12, 2026 — seafloor 52 m (measured), deepest dive 44 m (modelled)Jul 12Jul 15, 2026 — seafloor 50 m (measured), deepest dive 44 m (modelled)Jul 15Aug 7, 2026 — seafloor 107 m (measured), deepest dive 45 m (modelled)Aug 7Aug 9, 2026 — seafloor 25 m (measured), deepest dive 19 m (modelled)Aug 9Aug 21, 2026 — seafloor 80 m (measured), deepest dive 69 m (modelled)Aug 21Sep 26, 2026 — seafloor 86 m (measured), deepest dive 63 m (modelled)Sep 26Oct 12, 2026 — seafloor 27 m (measured), deepest dive 22 m (modelled)Oct 12

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

Dives

69 m
Deepest dive
3:16
Longest dive
122
Dives
18 m
Avg dive depth
9
Sightings
93
Days first → last

Dive metrics are modelled within real depth limits — not measured

Get actual dive data with Risa Deep →

Dive profile

modelled
05010069 mstartdive sequence (illustrative)

Depth shaped by the seafloor limit here (80 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 · Aug 21, 2026

measured
Seafloor depth
80 m
Sea-surface temperature
15.3°C
Distance from shore
3.0 km

Across the residency · 9 sightings

measured
Seafloor depth
25 m – 107 m
Sea-surface temperature
14.2°C – 17.8°C
Distance from shore
2.0 km – 9.0 km

Sources: GEBCO seafloor grid · NASA JPL MUR sea temperature · PacIOOS coastline distance

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

Source records

This activity is assembled from 9 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.