Found in tropical and subtropical waters around the world.
Conservation status
Least Concern
Edibility
Edible and generally regarded as good quality when properly prepared and thoroughly cooked. Do not eat raw; choose traceable sources and avoid animals from contaminated areas.
Culinary quality / 5
4
Danger level
Caution
Usual observation depth
?–30 m
Behaviour
Usually solitary and associated with a sheltering den. Mainly active by day, it hunts visually and explores the reef; it can rapidly camouflage itself, release ink and retreat into a crevice.
Observation zones
Reef, lagoon, reef flat, seagrass, sand and coral rubble; often near holes, fissures and small caves.
Diet
A predator of crustaceans, bivalve and gastropod molluscs, as well as small fishes. It often opens or drills prey shells.
Reproduction
Oviparous
Identification marks
A large, robust octopus with eight long arms bearing two rows of suckers. Its colour and skin texture change very rapidly, from mottled grey-brown to strongly contrasting patterns; iridescent blue areas may appear in some displays.
Similar species
It may be confused with other Indo-Pacific Octopus species, notably Octopus vulgaris where ranges overlap. Reliable identification requires location, size, mantle characters and, when necessary, scientific examination; colour alone is not sufficient.
Approach rules
Observe calmly without blocking access to its den. Keep hands, equipment and fins at a distance; do not touch, handle or feed it. Avoid close-range or repeated flash, especially when it is hiding, hunting or guarding eggs.
Protection
Listed as Least Concern (LC) on the IUCN Red List. Not listed in the CITES Appendices. Protection of reefs, coastal habitats and breeding sites remains important.
