The shape of the octopus is a round body and a spongy body with many tentacles.

The body of the octopus can reach several meters long and is cylindrical in shape with a central eye at the top. The tentacles of an octopus are made up of tentacles, which are made up of many tentacle segments. Tentacle segments are the basic unit of the octopus's tentacles, which they use to help the octopus capture food, move and support its body.

The tentacles of octopuses are divided into two categories: anterior tentacles and posterior tentacles. The front tentacles are the longest tentacles of the octopus and are usually slightly thicker than the other tentacles. They are used to help the octopus catch food and also act as support when the octopus moves. The hind tentacles are the shortest tentacles of the octopus and are usually thinner than the other tentacles. They are mainly used to help the octopus move and support its body.

The appearance of octopuses also varies a lot. Some octopuses are light gray, some are dark brown, and some are red. The octopus also has many spots and stripes on its body, which help the octopus hide its body by making it easier to see in the water.

About octopus ink

Octopus ink is a special substance used by octopuses for defense and self-defense. When an octopus feels threatened, it sprays ink around it, clouding the surrounding water and making its body harder to detect by its enemies. Ink is secreted by the ink glands in the octopus. The ink gland is a special organ in the octopus's body. It is located under the octopus's body, between its dorsal and pelvic fins. When an octopus feels threatened, its ink glands secrete ink and squirt it into the water through a small tube.