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

Megatteraccia – Residency

42nd sighting in Iceland
Fluke of Megatteraccia
Megatteraccia Confirmed in the catalog @105323
Oct 2 – 20, 2026 · Iceland

October Off Iceland

Autumn light, cold water, cliffs watching me feed in good company.

117 m
Deepest dive
3:29
Longest dive
33
Dives
Sightings
3
Days between first and last sighting
18

Dive stats modelled within real depth limits — not measured

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SightingSeafloorSea tempDeepest dive (modelled)
Oct 2, 2026213 m7.8°C117 m
Oct 17, 2026149 m6.8°C99 m
Oct 20, 202674 m6.6°C15 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
Oct 2, 2026 — seafloor 213 m (measured), deepest dive 117 m (modelled)Oct 2Oct 17, 2026 — seafloor 149 m (measured), deepest dive 99 m (modelled)Oct 17Oct 20, 2026 — seafloor 74 m (measured), deepest dive 15 m (modelled)Oct 20

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

Dives

117 m
Deepest dive
3:29
Longest dive
33
Dives
25 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
075150117 mstartdive sequence (illustrative)

Depth shaped by the seafloor limit here (213 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 · Oct 2, 2026

measured
Seafloor depth
213 m
Sea-surface temperature
7.8°C
Distance from shore
4.0 km

Across the residency · 3 sightings

measured
Seafloor depth
74 m – 213 m
Sea-surface temperature
6.6°C – 7.8°C
Distance from shore
4.0 km – 6.0 km

Sources: GEBCO seafloor grid · NASA JPL MUR sea temperature · 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.