The common octopus is one of the most intelligent invertebrates. Its problem-solving abilities, camouflage and flexible body have made it a subject of fascination for scientists and divers.
Interesting facts
- Octopuses have three hearts and blue, copper-based blood.
- They can change colour and skin texture in a fraction of a second.
- They can squeeze through any gap larger than their beak.
- Octopuses solve puzzles, open jars and use tools.
- They squirt ink to confuse predators.
- Females die soon after their eggs hatch.
Behaviour
Octopuses are solitary, hunting mostly at night and living in dens that they may decorate with shells and stones.
Breeding and young
Females lay tens of thousands of eggs in a den and guard them without eating until they hatch.
Threats and conservation
Widely fished; populations fluctuate with fishing pressure and ocean conditions.
Where to see it
- Snorkelling and diving in the Mediterranean, the Canary Islands and the Azores
Status source: IUCN Red List. Profile last reviewed September 2026.
Tangkoko Nature Reserve: Tarsiers and Black Macaques
