Curled Octopus
EN

Curled Octopus

Eledone cirrhosa

Unknown

Photo: Wikimedia Commons (CC) via https://en.wikipedia.org/wiki/Curled_octopus

Overview

The curled octopus, also known as the horned octopus, lesser octopus or northern octopus, is a species of cephalopod found in the northeast Atlantic, ranging from Norway to the Mediterranean, including the British Isles. The total length of an adult is around 50 cm, but their arms are often tightly curled. It immobilises and eats large crustaceans by drilling a hole through their shell.

It is mainly by-catch in commercial fisheries of the north eastern Atlantic and Mediterranean, where the common octopus is the preferred species.

The Curled Octopus faces significant population declines primarily due to intensive commercial fishing pressure and habitat degradation in coastal waters. Overfishing has reduced prey availability while bottom trawling activities destroy critical benthic habitats where this species forages and shelters.

Threat summary

Habitat

The curled octopus is mainly found at depths between and may occur down to . It lives in the northeast Atlantic Ocean, including the English Channel, the North Sea, and the Mediterranean Sea. In recent years the North Sea populations have increased, probably due to overfishing of large predatory fish such as Atlantic cod. This has had an effect on crab and lobster fisheries as the curled octopus...

MARINE· major

Frequently asked questions

Why is Curled Octopus classified as Endangered?
Curled Octopus is classified as Endangered — facing a very high risk of extinction in the wild — because population numbers are declining steeply and key habitats are under sustained pressure. The Curled Octopus faces significant population declines primarily due to intensive commercial fishing pressure and habitat degradation in coastal waters. Overfishing has reduced prey availability while bottom trawling activities destroy critical benthic habitats where this species forages and shelters.
Where does Curled Octopus live?
Curled Octopus occurs in Algeria, Belgium, Croatia, Denmark, Faroe Islands, and France (plus 15 other countries). Country-level distribution data is sourced from the IUCN Red List and cross-referenced with GBIF occurrences.
What are the main threats to Curled Octopus?
The main threats to Curled Octopus are ai-1, ai-2, ai-3, and ai-4. The full IUCN-classified threat record for this species is detailed on the species page.

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