No need. The main thing to clean an octopus is the inside of the head to be turned out and cleaned ? Along the bottom of the small hole upward tearing, the bottom of a mouthpiece, black hard shell-like things to clean as well as upward there is an ink sac needs to be removed, the rest can be eaten.

Octopus: also known as octopus, eight with octopus, sitting octopus, stone residence, stone suction, looking at the tide, the dead cow, the Taiwanese said "TAKO", from the Japanese "たこ (蛸)", belonging to the molluscan phylum cephalopods octopods (Octopoda), is an octopod (Octopoda). It is a common name for Octopoda cephalopod mollusks, but strictly refers only to octopuses. Because of the eight wrists on its head, and the wrists are connected by a membrane, varying in length, with two rows of sessile suckers on the wrists, suckers without a stalk, so it is called "Octopoda". They sometimes spew out black ink to help them escape.

Handling method: Wash the octopus in water, cut open the head, remove the internal organs, tear off the skin, and then clean it.

Octopus habits:

The octopus draws water into the outer coat membrane, breathes, and then expels the water through a short funnel-shaped body tube. Most octopuses crawl along the bottom of the sea with suckers, but when startled they will eject water from their body tubes in a powerful jet, which causes them to move quickly in the opposite direction. When in danger, they emit an ink-like substance that serves as a smoke screen. Some species produce a substance that paralyzes the attacker's sense organs. The most familiar octopus is the common octopus (O. vulgaris), medium-sized, widely distributed in tropical and temperate seas around the world, inhabiting the rocky seabed in caves or crevices, preferring to stay hidden. It mainly feeds on crabs and other crustaceans. The species is considered to be the highest invertebrate intelligence, and has a highly developed pigment-containing cells, so it can very quickly change body color, the rapid change is also surprising.