Octopus (plural octopuses or octopi) is a kind of mollusk that live in many regions of the ocean, especially in coral reefs. There are many types of octopuses, but they all have eight arms (not tentacles).

They eat, for example, fish and crabs. Some species of octopuses also eat other octopuses.

Many biologists think they are the most intelligent of the invertebrate animals.

Unlike most other cephalopods, most octopuses have entirely soft bodies with no internal skeleton. They have no protective outer shell like the nautilus, which is another type of animal. What is more, they have no sign of an internal shell or bone, like cuttlefish or squids. A beak, similar in shape to a parrot's beak, is their only hard part. This being the case, it is very easy for an octopus to squeeze through very narrow openings between rocks. An octopus has three hearts.

invertebrates

Октоподи | Polp | Kraken | Octopus | Octopoda | Polpo | Pieuvre | Polbo | Hobotnica | Асткъахыг | Octopus vulgaris | תמנון | Axtapot | Aštuonkojai | Octopus (dier) | タコ | سەككىز پۇتلۇق بېلىق | Ośmiornice | Polvo | Осьминог | Chobotnice | Октопод | ஒக்டோபஸ் | 章鱼