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

Bultrug – Residency

17th sighting in Iceland
Fluke of Bultrug
Bultrug Confirmed in the catalog @124069
Jun 9 – Aug 1, 2025 · Iceland

Iceland · Jun – Aug 2025

142 m
Deepest dive
4:51
Longest dive
176
Dives
Sightings
16
Days between first and last sighting
53
Deepest dive on record
142 m · this residency

Dive stats modelled within real depth limits — not measured

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SightingSeafloorSea tempDeepest dive (modelled)
Jun 9, 2025179 m—102 m
Jun 10, 2025150 m—99 m
Jun 12, 202562 m—48 m
Jun 16, 2025158 m—91 m
Jun 21, 2025190 m—39 m
Jun 22, 202535 m—30 m
Jun 24, 202553 m—46 m
Jul 2, 202575 m—47 m
Jul 5, 202580 m—63 m
Jul 13, 202599 m—52 m
Jul 14, 2025202 m—142 m
Jul 15, 2025127 m—79 m
Jul 22, 2025149 m—69 m
Jul 28, 202572 m—41 m
Jul 30, 2025102 m—34 m
Aug 1, 2025123 m—95 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 9, 2025 — seafloor 179 m (measured), deepest dive 102 m (modelled)Jun 9Jun 10, 2025 — seafloor 150 m (measured), deepest dive 99 m (modelled)Jun 12, 2025 — seafloor 62 m (measured), deepest dive 48 m (modelled)Jun 16, 2025 — seafloor 158 m (measured), deepest dive 91 m (modelled)Jun 16Jun 21, 2025 — seafloor 190 m (measured), deepest dive 39 m (modelled)Jun 22, 2025 — seafloor 35 m (measured), deepest dive 30 m (modelled)Jun 24, 2025 — seafloor 53 m (measured), deepest dive 46 m (modelled)Jun 24Jul 2, 2025 — seafloor 75 m (measured), deepest dive 47 m (modelled)Jul 5, 2025 — seafloor 80 m (measured), deepest dive 63 m (modelled)Jul 13, 2025 — seafloor 99 m (measured), deepest dive 52 m (modelled)Jul 13Jul 14, 2025 — seafloor 202 m (measured), deepest dive 142 m (modelled)Jul 15, 2025 — seafloor 127 m (measured), deepest dive 79 m (modelled)Jul 22, 2025 — seafloor 149 m (measured), deepest dive 69 m (modelled)Jul 22Jul 28, 2025 — seafloor 72 m (measured), deepest dive 41 m (modelled)Jul 30, 2025 — seafloor 102 m (measured), deepest dive 34 m (modelled)Aug 1, 2025 — seafloor 123 m (measured), deepest dive 95 m (modelled)Aug 1

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

Dives

142 m
Deepest dive
4:51
Longest dive
176
Dives
26 m
Avg dive depth
16
Sightings
53
Days first → last

Dive metrics are modelled within real depth limits — not measured

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Dive profile

modelled
075150142 mstartdive sequence (illustrative)

Depth shaped by the seafloor limit here (202 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 14, 2025

measured
Seafloor depth
202 m
Sea-surface temperature
—
Distance from shore
4.0 km

Across the residency · 16 sightings

measured
Seafloor depth
35 m – 202 m
Sea-surface temperature
—
Distance from shore
1.0 km – 8.0 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 16 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.