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

Petra – Residency

8th sighting in Iceland
Fluke of Petra
Petra Confirmed in the catalog @124088
Apr 26 – May 23, 2025 · Iceland

Iceland · Apr – May 2025

116 m
Deepest dive
5:45
Longest dive
60
Dives
Sightings
5
Days between first and last sighting
27
Deepest dive on record
116 m · this residency

Dive stats modelled within real depth limits — not measured

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SightingSeafloorSea tempDeepest dive (modelled)
Apr 26, 2025149 m—95 m
May 3, 2025154 m—116 m
May 4, 2025149 m—62 m
May 5, 202569 m—41 m
May 23, 202540 m—25 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
Apr 26, 2025 — seafloor 149 m (measured), deepest dive 95 m (modelled)Apr 26May 3, 2025 — seafloor 154 m (measured), deepest dive 116 m (modelled)May 3May 4, 2025 — seafloor 149 m (measured), deepest dive 62 m (modelled)May 4May 5, 2025 — seafloor 69 m (measured), deepest dive 41 m (modelled)May 5May 23, 2025 — seafloor 40 m (measured), deepest dive 25 m (modelled)May 23

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

Dives

116 m
Deepest dive
5:45
Longest dive
60
Dives
28 m
Avg dive depth
5
Sightings
27
Days first → last

Dive metrics are modelled within real depth limits — not measured

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Dive profile

modelled
075150116 mstartdive sequence (illustrative)

Depth shaped by the seafloor limit here (154 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 · May 3, 2025

measured
Seafloor depth
154 m
Sea-surface temperature
—
Distance from shore
7.0 km

Across the residency · 5 sightings

measured
Seafloor depth
40 m – 154 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 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).

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