Atlantic White-spotted Octopus

Callistoctopus Macropus

< 140 cm
Max size
5–100 m
Depth
Rare
Rarity
Habitats

Reefs

Regions

Indian Ocean, Mediterranean Sea, Temperate Atlantic, Tropical Atlantic, Tropical Pacific

About

Overview

The Atlantic White-spotted Octopus is a solitary, nocturnal cephalopod known for its striking reddish coloration and distinct white spots. It is primarily found in the temperate and tropical waters of the Atlantic Ocean and the Mediterranean Sea, where it inhabits shallow coastal environments.

Appearance

This species is characterized by a reddish-brown body covered in white blotches and paired white spots along its arms. It possesses eight arms, with the first pair being significantly longer and more robust than the others. When threatened, it displays deimatic behavior, intensifying its color and expanding its white spots to appear more intimidating to potential predators.

Distribution & habitat

While historically reported in various tropical and temperate regions globally, the species is now considered to be primarily restricted to the Atlantic and Mediterranean. It is a benthic animal that favors rocky substrates with crevices, seagrass meadows, and sandy or rubble-covered bottoms. It is typically found in shallow coastal waters, ranging from the surface down to approximately 100 meters.

Biology & behavior

Active mainly at night or during twilight, this octopus is a solitary hunter. It is known to crawl across the seafloor, sometimes spreading its body wide to forage for prey. Like other octopuses, it can change its skin color and texture to mimic its surroundings, such as rocks or coral, for camouflage. If disturbed, it may release ink to facilitate an escape.

Feeding

This octopus is a carnivore that feeds on small organisms found within its environment. It is frequently observed hunting for bivalve mollusks and small fish, often searching for prey hidden in the substrate or among coral branches.

Distribution

Based on iNaturalist community observations

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