The problem of the antennae of the octopus, the octopus has several antennae

The tentacles of the octopus have a strong ability to regenerate. When you meet an enemy, sometimes you can't fight, so you give your tentacles to the enemy to eat, and you quickly flee for your life; Winter is coming, and the octopus eats its own tentacles to ensure that the body needs it. After more than ten days, the tentacles regrow.

Octopus octopus

The plural is called octopuses or octopi.

Octopus, also known as octopus, is also a marine mollusk.

Octopoda is a common name for cephalopod molluscs. However, strictly speaking, it refers to the octopus genus, which is widely distributed in shallow water.

The size of octopuses varies greatly. The smallest octopus is the arbor-like octopus (O.Darborescens), about 5 cm (2 in) long, while the largest species can be up to 18 m (18 ft) long and have a wrist span of almost 9 m (30 ft).

The body of a typical octopus is sac-shaped; The division between the head and the body is not obvious, and there are large compound eyes and 8 retractable wrists. Each wrist has two rows of fleshy suction cups that can hold other objects strongly. The base of the wrist is connected to a webbed tissue called a skirt, and its center has an opening.

The mouth has a pair of sharp palates and file-like toothed tongues, which are used to drill through shells and scrape their flesh.

The octopus sucks water into the mantle and excretes it through a short funnel-shaped tube after breathing. Most octopuses use suckers to crawl along the bottom of the sea, but when frightened, they spew water from their body tubes, which quickly moves in the opposite direction. When encountering danger, it will spray an ink-like substance that acts as a smoke screen.

Some species produce substances that can paralyze the attacker's sensory organs.

The most well-known octopus is the common octopus (o.).vulgaris), medium in size, widely distributed in tropical and temperate seas around the world, inhabiting caves or crevices on the rocky seabed, and preferring to hide. It feeds mainly on crabs and other crustaceans.

This species is considered to be the most intelligent of the invertebrates and has highly developed pigment-containing cells, so it can change body color very quickly, and the speed of change is amazing.

Octopuses are dioecious. The male has a specialized wrist, called the stem carpus or handover carpus, which is used to place the sperm bag directly into the mantle cavity of the female. Common octopuses mate in winter.

The eggs are about 1 8 inches long, with a total number of more than 100,000, and are laid under rocks or in holes. The larvae hatch after 4 6 58 weeks, during which the female guards the eggs, cleans them with a suction cup and stirs the eggs with water. Juvenile octopuses are small and adult-like, and after hatching, they drift with plankton for several weeks before sinking to the bottom to hide.

Octopuses feed mainly on shrimp and crabs, but some species feed on plankton. Many marine fish feed on octopus. In the Mediterranean, the Orient and some other parts of the world, octopus has long been regarded as a delicacy.

Scientists have found that octopuses are a very intelligent species, and it can be said that they are also cunning and treacherous. That's why we say that the octopus is a very "brainy" animal. Because in many cases, the octopus does not rely on its own brute force to win.

This is because the nerves in the tentacles of the octopus are still alive, so they still squirm, so this is a very normal phenomenon.

The octopus is a cephalopod, and its tentacles have many nerves that cause muscles to contract, just like a person who is cremated before death, he will suddenly sit up because of the voluntary movement of the nerves.

Because the tentacles of the octopus still have some nerves, which can control the contraction of the octopus's claws, and the muscle tissue still retains a certain degree of mobility, so even if it is cut open, its claws will still move.

There are a lot of octopus antennae, and children like it, so come and learn.

Don't you want to see if this tentacle can catch something?!

It has long been thought that octopuses have 8 tentacles, but this is not the case. British researchers have found that this species, which has existed since ancient Greek times, is actually divided into hands and feet, with three pairs of tentacles and one pair of tentacles.

Serendipitous discovery. The study of octopus tentacles spanned 20 regions in Europe. The researchers originally used their tentacles to observe whether the octopus had the habit of using its tentacles, whether it was like a human, whether it was left and right, or whether it could be used flexibly on both sides.

But through the study of the daily behavior of the octopus, they unexpectedly discovered that the octopus is actually divided into hands and feet.

Not only that, but the researchers have also made new discoveries about the different functions of the octopus's tentacles.

Previously, it was thought that octopuses use four tentacles to move and the other four to feed or catch prey. But the results of the study showed that the octopus only used the last two tentacles to help it move around rock obstacles.

The British "Times" quoted Claire Little, the head of the research project, as saying on the 13th, "When the octopus wants to swim, it will use these two 'legs' as the main thrusters, and the other tentacles only play an auxiliary role." ”

Rubik's Cube Experiment. Mavis is a giant octopus next to the Tai Hall, with a head the size of a Western dinner plate and a tentacle about half a meter long. The wild Pacific giant octopus weighs 71 kilograms, and although Mavis is not that heavy, it is still the "Big Mac" of octopuses.

It is agile and has a suction cup on its wrist that allows it to capture food with ease.

Mavis lives in a large tank at the Weymouth Marine Life Centre in England, where it helped researchers accidentally discover that octopuses also have hands and feet.

The octopus is one of the most intelligent sea creatures, and it is able to learn how to open jam bottles and other operations.

The experimental tool used by the researchers was a toy Rubik's cube. First, they threw the cube into the tank where the octopus was, and then began to carefully observe how the octopus used its tentacles to play with the cube.

"Experimental observation of Mavis playing with the Rubik's Cube revealed that the octopus has six hands and two legs," Little said. ”

Learn more. Studies have also found that when an octopus gets into some sort of mess, it uses a third pair of tentacles to help. Little said that the octopus will frequently use a third pair of tentacles to solve problems from both sides at the same time.

After observing and studying a large number of octopuses, we believe that most octopus tentacles are not left and right, and that the tentacles on both sides can be fully utilized," Little said.

Researchers say the octopus's eyes grow in the front of its body in a diagonal shape. As a result, it uses its eyes to select its tentacles for different jobs. Earlier studies suggested that octopus tentacles were left and right because some octopuses suffered from short-sightedness or visual impairment.

You let it go to [Supergirl], and it's the hands that take the microphone, and the other is the feet.

The big ones are the feet, and the small ones are the hands.

It's all hands, it's all feet. ··

1.Catch an octopus first, and then hit it on the head with a hammer, and the octopus will touch its head with its hands, and the rest with its feet 2Hold it with a pistol, raise it with a hand, and swing it with a leg 3

Take a durian and give it a smell, the one that will cover the nose is the hand, and the other is the foot 4It's a computer, it's the hand that is placed on the keyboard, and the foot that is retracted on the chair is the foot 5Take it to jump, it is the hand that shakes it above the head, and it is the foot that twists it when it steps on the ground 6

Sprinkle a handful of water on it, and it is the hand that grabs the towel, and the other is the foot 7Throw 100 yuan on the ground, step on the foot first, and then pick up the hand. 8.

Winter is coming, it is the hands that cover the head, and the others are the feet 9When you touch the chief, the hand that comes out first, and the opposite is true when you touch the subordinate. 10.

Put it on the car, it is the hand that grabs the steering wheel, and the one that retracts from the chair is the foot 11It has a pair of white socks, and it is the hand that sticks out to catch it and sends it to its mouth, and the rest is the foot. 12.

Give it a turnip, and it is the hand that reaches out to catch it and sends it to its mouth, and the rest is the foot. 13.When he saw the chef of the restaurant, he ran away, and it was his feet that ran away, and the rest was his hands.

14.When I see mm, I hug, I hug my hands, and I support my feet. (Note:.)

If eight hands hold mm together, it can only mean that this octopus is a lustful octopus, and it must not be simply considered to be eight hands. Satisfied.