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

Megatteraccia – Residency

39th sighting in Iceland
Fluke of Megatteraccia
Megatteraccia Confirmed in the catalog @105323
May 9 – 10, 2026 · Iceland

Early Shelf Company

Spring's barely started and the shallows already know my fluke.

88 m
Deepest dive
4:07
Longest dive
31
Dives
Sightings
2
Days between first and last sighting
1

Dive stats modelled within real depth limits — not measured

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SightingSeafloorSea tempDeepest dive (modelled)
May 9, 2026117 m4.2°C88 m
May 10, 2026117 m4.2°C53 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
May 9, 2026 — seafloor 117 m (measured), deepest dive 88 m (modelled)May 9May 10, 2026 — seafloor 117 m (measured), deepest dive 53 m (modelled)May 10

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

Dives

88 m
Deepest dive
4:07
Longest dive
31
Dives
22 m
Avg dive depth
2
Sightings
1
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 (117 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 9, 2026

measured
Seafloor depth
117 m
Sea-surface temperature
4.2°C
Distance from shore
2.0 km

Across the residency · 2 sightings

measured
Seafloor depth
117 m
Sea-surface temperature
4.2°C
Distance from shore
2.0 km

Sources: GEBCO seafloor grid · NOAA OISST sea temperature · PacIOOS coastline distance

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

Source records

This activity is assembled from 2 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.