The body of the octopus is short ovoid, saccate, without fins; the head and carapace are not clearly demarcated, the head carapace of the octopus is about 7-9.5 centimeters, the head has a large compound eye and eight contractible wrists. Each carpus has two rows of fleshy suckers, the carpus of short octopus is about 12 centimeters long, the carpus of long octopus is about 48.5 centimeters long, and the carpus of true octopus is about 32.5 centimeters long.

We usually crawl with our wrists, sometimes we use the membrane between our wrists to stretch to swim, and we can hold other things strongly, and use the funnel at the lower part of our head to spray the water for rapid retreat. The base of the wrist is connected to a webbed tissue called the skirt, which has a mouth at its center. The mouth has a pair of sharp, horny palpi and a file-like toothed tongue, which is used to drill through shells and scrape their flesh.

Expanded Information:

Octopus's Special Abilities:

1. Sensitive Sense of Touch

Octopus's special abilities:

1. /p>

The octopus has eight sensitive tentacles, each tentacle has more than 300 suction cups, each suction cup of 100 grams of tension no matter who is entangled in its tentacles, it is difficult to get out of. Octopus tentacles and human hands, has a high degree of sensitivity, used to detect the movement of the outside world. When it rests, there are always one or two tentacles in the non-stop moving around, highly alert to the presence or absence of "enemy".

If something touches its tentacles in the outside world, it will immediately jump up, and at the same time the thick black ink jet out to hide themselves, taking this opportunity to observe the surrounding situation, ready to attack or retreat. The octopus can spray ink out six times in a row, and after half an hour, it can accumulate a lot of ink, the octopus's ink is not poisonous to people.

2, the ability to change color

Octopus in panic, excitement, excitement and other emotional changes, the skin will change color. Control of octopus body color change of the command system is its eyes and medulla oblongata, if a side of the eyes and medulla oblongata out of the problem, this side is fixed to an unchanging color, while the other side can still change color. Then there's the octopus's great ability to regenerate.

Whenever an octopus encounters an enemy, sometimes its tentacles are firmly grasped by the other side, at this time it will automatically throw off the tentacles and take a step back, so that the writhing of the broken tentacles to confuse the enemy, and take the opportunity to slip away quickly. Whenever a tentacle is broken, the blood vessels in the wound will contract vigorously to heal the wound quickly, so the wound will not bleed, and it will grow well the next day, and soon grow a new tentacle.

Baidu Encyclopedia - Octopus (Common name for many species of animals in the octopus family)

Baidu Encyclopedia - Octopus (Octopus family)