Octopus: eight-armed, intelligent marine mollusk found in oceans worldwide.
描述
The octopus is a cephalopod mollusc that is found in all oceans. It has eight arms, each of which has a suction cup on the end. The octopus uses its arms to crawl along the ocean floor and to capture prey. It can also use its arms to swim. The octopus is a very intelligent creature and is able to learn and solve problems.
