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Ocean animals

Amadako Octopus

Amazing fact

Octopus hongkongensis stores food in an organ called the crop before digestion.

鳥羽水族館
Amadako Octopus in its habitat (illustration)

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An illustration based on the real animal.

A little discovery to share.

It is named for the large and the small bumps above its eyes.

Source鳥羽水族館 — ツノモチダコ

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THE REAL WORLD

The real Amadako Octopus

Scientific name
Octopus hongkongensis
Japanese name
ツノモチダコ
Group
Ocean animals
Class
Cephalopoda
Order
Octopoda
Family
Octopodidae
Genus
Octopus
Facts about the real animal.
01

An octopus of the deep sea, found from off the Boso Peninsula to Sagami and Suruga bays.

鳥羽水族館 — ツノモチダコ
02

It is named for the large and the small bumps above its eyes.

鳥羽水族館 — ツノモチダコ

Where the Amadako Octopus has been recorded

World map with dots where the Amadako Octopus 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 livesJapanDeep sea

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

한국어
눈큰낙지

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.

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

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