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Ocean animals

Plocamopherus imperialis

Amazing fact

The Bekkou hikari sea slug has been recorded eating its own eggs.

日本動物園水族館協会
Plocamopherus imperialis in its habitat (illustration)

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An illustration based on the real animal.

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The Bekkou hikari sea slug has been recorded eating its own eggs.

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THE REAL WORLD

The real Plocamopherus imperialis

Scientific name
Plocamopherus imperialis
Japanese name
ベッコウヒカリウミウシ
Group
Ocean animals
Class
Gastropoda
Order
Nudibranchia
Family
Polyceridae
Genus
Plocamopherus
Facts about the real animal.
02

Its body looks black or red, but it is sprinkled with dark brown blotches.

03

Around the edge of its body are projections with knobs that give off light.

How the Plocamopherus imperialis lives

It is often found crawling over brown algae. It has also been recorded eating bryozoans. When disturbed, it can swim by vigorously flapping its body from side to side.

Australian Museum日本動物園水族館協会

Basic data

Range
Japan
鳥羽水族館

Where the Plocamopherus imperialis has been recorded

World map with dots where the Plocamopherus imperialis has been recorded
Each dot marks a place with observations or specimens shared on GBIF. Some records are of animals that strayed or were brought by people, so the dots are not always where the animal lives.

Records: GBIF.org (CC0 and CC BY 4.0 records, retrieved 2026-11-07). Map: Natural EarthSee the records on GBIF

Where it livesJapanOcean

Watch wild animals from a distance. Do not touch or feed them, and take care of the places where they live.

Names around the world

Names come from Wikidata and iNaturalist records. Where a language has no recorded name, we use the scientific name.

Sources and how we check

We check each fact against its source. The illustrations simplify how the real animal looks.

The classification (class, order, family, genus) follows Wikidata records, checked against GBIF. Classifications can change as research goes on.

The basic data are the values given in each source. They vary with how the animal is measured, whether it is male or female, and whether it lives in the wild or in captivity.

This page was translated from the original Japanese with the help of AI.

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