Small Octopus, Octopus sp., Ambon, Moluccas, Indonesia

A Caribbean reef octopus (Octopus briareus) explores the seafloor of a shallow reef off the coast of Belize. This intelligent cephalpod ranges throughout the Caribbean feeding on lobster, crab, and small fish.

A longarm octopus flashes its colors at night, Anilao, Philippines.

A female paper nautilus swims through the black water in search of a mate, Anilao, Philippines.

Small Octopus stretching out tenticles in search of food. Cyprus.

Lesser Octopus (Eledone cirrhosa) juvenile hiding in Mussel shell, Summer Isles, Scotland, UK.

Close up of the eggs of a common octopus (Octopus vulgaris) in an advanced state of maturation; the eyes of the small octopuses can already be seen. The mother takes care of the eggs, protecting and aerating them without stopping, not eating anymore after laying them, and dying immediately after hatching.

Many of the small green crabs are in the basket in the harbor in Alvor, Portugal. Fishermen use crabs as a bait for octopuses

Many of the small green crabs are in the basket in the harbor in Alvor, Portugal. Fishermen use crabs as a bait for octopuses

Small crabs used as bait in octopus traps in Alvor, Algarve, Portugal, Europe

Australia, Venomous Blue Ringed octopus (Hapalochlaena maculosa) attached to sea sponge.

This Short Armed Sand Octopus (Amphioctopus arenicola) has selected a beer bottle to live in. They are normally found in a small hole on a sandy bottom, not far from a reef and is endemic, Maui, Hawaii, United States of America