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

Butterfly – Residency

26th sighting in Iceland
Fluke of Butterfly
Butterfly Confirmed in the catalog @16842
Jul 7 – Aug 9, 2025 · Iceland

Iceland · Jul – Aug 2025

114 m
Deepest dive
4:25
Longest dive
157
Dives
Sightings
8
Days between first and last sighting
33
Deepest dive on record
114 m · this residency

Dive stats modelled within real depth limits — not measured

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SightingSeafloorSea tempDeepest dive (modelled)
Jul 7, 2025134 m—96 m
Jul 9, 2025104 m—85 m
Jul 11, 2025125 m—43 m
Jul 14, 2025114 m—74 m
Jul 22, 2025125 m—114 m
Jul 28, 2025111 m—61 m
Aug 4, 2025124 m—77 m
Aug 9, 2025131 m—107 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 7, 2025 — seafloor 134 m (measured), deepest dive 96 m (modelled)Jul 7Jul 9, 2025 — seafloor 104 m (measured), deepest dive 85 m (modelled)Jul 9Jul 11, 2025 — seafloor 125 m (measured), deepest dive 43 m (modelled)Jul 11Jul 14, 2025 — seafloor 114 m (measured), deepest dive 74 m (modelled)Jul 14Jul 22, 2025 — seafloor 125 m (measured), deepest dive 114 m (modelled)Jul 22Jul 28, 2025 — seafloor 111 m (measured), deepest dive 61 m (modelled)Jul 28Aug 4, 2025 — seafloor 124 m (measured), deepest dive 77 m (modelled)Aug 4Aug 9, 2025 — seafloor 131 m (measured), deepest dive 107 m (modelled)Aug 9

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

Dives

114 m
Deepest dive
4:25
Longest dive
157
Dives
29 m
Avg dive depth
8
Sightings
33
Days first → last

Dive metrics are modelled within real depth limits — not measured

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Dive profile

modelled
075150114 mstartdive sequence (illustrative)

Depth shaped by the seafloor limit here (125 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 22, 2025

measured
Seafloor depth
125 m
Sea-surface temperature
—
Distance from shore
3.0 km

Across the residency · 8 sightings

measured
Seafloor depth
104 m – 134 m
Sea-surface temperature
—
Distance from shore
1.0 km – 7.0 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 8 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.