In order to pump blood through their body octopuses have three hearts. The mouth has two beaks on the outside of the radula, the part of the mouth that can open shells. These protuberances or suckers are very sensitive and capable of flexing and picking up chemical changes in the water. The eight arms come together on the octopus at the skirt, and the mouth sits in the center of the skirt.Įach of the eight arms or tentacles of an octopus generally has over 200 suction cup like protuberances that it uses to help it grab onto its prey. The most notable characteristic of octopuses are their strong arms which are lined with suction cups. Octopuses can range in size anywhere from two inches to 18 feet long. The octopuses pupils are able to maintain a fixed position regardless of the octopuses physical orientation. These large eyes allow octopuses to be able to see distinct shapes, a feat not many sea creatures possess. Their body is rounded and elongated, and their dark eyes are well-defined.

In fact octopus completely lack the presence of any bones, which makes them extremely flexible and maneuverable.īecause of this octopuses are able to fit into small spaces, squeeze through tiny openings and cracks and hide in areas that would be inaccessible to most predators and vertebrae animals. Octopuses have eight long arms that they use for locomotion, and they are invertebrates, which means they have no backbone.

Physical Characteristics and AppearanceĪs a species there are about 300 recorded species of octopus that can vary in terms of psychical characteristics and appearance, however there are some features that are common among most species of octopus. However, there is a bit more to octopuses than you may know.įor starters there are around 300 recorded species of octopus that have been observed so far and some of them have amazing and unique abilities such as being able to produce light, mimic other ocean animals and use tools.Īfter a closer look, you can see just how amazing an octopus really is.

Octopuses are one of the ocean’s most interesting creatures.Įveryone knows the general facts about them: they have eight arms, they are considered an incredibly intelligent animal, they have giant heads, etc.

Octopus natural predators