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

Alisa – Residency

4th sighting in Iceland
Fluke of Alisa
Alisa Confirmed in the catalog @140038
Apr 28 – May 16, 2025 · Iceland

Iceland · Apr – May 2025

88 m
Deepest dive
3:17
Longest dive
16
Dives
Sightings
3
Days between first and last sighting
18
Deepest dive on record
88 m · this residency

Dive stats modelled within real depth limits — not measured

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SightingSeafloorSea tempDeepest dive (modelled)
Apr 28, 2025149 m—78 m
May 5, 2025149 m—88 m
May 16, 20259 m—7 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 28, 2025 — seafloor 149 m (measured), deepest dive 78 m (modelled)Apr 28May 5, 2025 — seafloor 149 m (measured), deepest dive 88 m (modelled)May 5May 16, 2025 — seafloor 9 m (measured), deepest dive 7 m (modelled)May 16

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

Dives

88 m
Deepest dive
3:17
Longest dive
16
Dives
24 m
Avg dive depth
3
Sightings
18
Days first → last

Dive metrics are modelled within real depth limits — not measured

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Dive profile

modelled
05010088 mstartdive sequence (illustrative)

Depth shaped by the seafloor limit here (149 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 5, 2025

measured
Seafloor depth
149 m
Sea-surface temperature
—
Distance from shore
6.0 km

Across the residency · 3 sightings

measured
Seafloor depth
9 m – 149 m
Sea-surface temperature
—
Distance from shore
3.0 km – 6.0 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 3 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.