Why do starfish walk without feet?

In the food chain of nature, there is often a life-and-death contest between predators and ** eaters. In order to escape the predation of starfish, ** food animals can almost all make an escape response. There is a sea cucumber that rolls violently in the water whenever a starfish touches it, fleeing before it is firmly grasped.

The scallop also has a unique way of avoiding the starfish, as the scallops swim away quickly one by one when the starfish comes close to them. There is a small anemone that clings to it whenever a starfish approaches it, <> from climbing

detach from the reef and drift to safety. The evasive abilities of these animals are developed from a long period of evolution. Avoided the fate of being eliminated by nature.

Although starfish are the best predators, they are gentle with their offspring. Starfish often erect their wrists after laying eggs, forming a protective umbrella for the eggs to hatch inside and avoid predation by other animals. The hatchlings drift around the sea, feed on plankton, and eventually grow into starfish.

Starfish are found mainly on shallow seafloor sands or reefs around the world and feed mainly on plankton. We are no strangers to it. However, we know very little about its ecology.

The starfish does not look like an animal, and judging by its appearance and slow movements, it is hard to imagine that the starfish is a voracious carnivore that plays an extraordinary role in the evolution of marine ecosystems and organisms. That's why it's so widespread around the world. The respiratory organ of a starfish is the gills.

The gills are membranous protrusions that protrude from between the plates of bone and communicate with the body cavity on the inside. The gills are simple or branched, single scattered or clustered <>

Dermal gill area. The gills of starfish increase the ability and area of breathing. It's like a fish breathing with its gills in water.

Tube foot. The starfish has many legs sticking out of the groove, and these feet are like small pumps. As the starfish walks, these "pumps" are constantly contracting, propelling the body forward by pumping water in and out.

Starfish walk with tubular feet and are fixed with suction cups. Starfish are the most representative type of echinoderms with structural physiology. The body is flattened, mostly symmetrical with five radiations, and the demarcation between the body disc and the wrist is not obvious.

When living, the mouth faces down, and the mouth faces up. <

Tube foot. The starfish can stretch out a lot of pipe feet in the step groove, and these pipe feet are like small water pumps. As the starfish walks, these "pumps" are constantly contracting, propelling the body forward by pumping water in and out.

Starfish walk with tubular feet and are fixed with suction cups. Starfish are the most representative type of echinoderms with structural physiology. The body is flattened, mostly symmetrical with five radiations, and the demarcation between the body disc and the wrist is not obvious.

When living, the mouth faces down, and the mouth faces up.

Starfish is a marine animal. If you turn them over, you can see that there are some dense tube-like structures under their five wrists, called "tubular feet". These structures can be called their feet because they rely on the peristalsis of these structures to move.

The number of tubular feet varies depending on the size of the starfish. Small starfish typically have only a few hundred tubular feet, but larger starfish can have thousands. <

Starfish are echinoderms that live in the ocean, and they will often lie quietly on the bottom of the ocean, sometimes observing them for a long time and they will not be active. When they lie down, they seem to have no feet. They will have five wrists, but those five wrists do not count as their feet.

If we turn them over, we will find a lot of tube-like things that can be counted as their feet. However, these feet are not what we usually call animal feet, and the difference between the two is still relatively large. However, considering that they use these structures to move, it can also be said that starfish have legs.

As mentioned above, starfish can't see their feet while they're lying on the bottom, but if you turn them over, you'll see a lot of tube-like stuff. If the structures used by living beings to move are defined as feet, these structures can be called feet, and they are called "tubular feet". They are distributed underneath the starfish's five wrists, so they can only be observed when they are turned over.

The number of these tubular feet is very large, and the number of tubular feet varies from starfish to starfish. For example, some large starfish will have thousands of tubular feet.

It is with the help of these structures that the starfish can move, and these tubular feet can wriggle and move the starfish into action. However, while starfish are motile, they move very slowly because the tubular foot structure cannot support their rapid movement.

Starfish have no legs, but they have several powerful "arms" that help them swim quickly at the bottom of the ocean. It turns out that in the starfish's body there are some tubes that stick out like arms, and they are called tubular feet. The tubular foot is the movement and sensory organ of the starfish, and at the end of each tubular foot there is a suction cup, which uses the movement of the tubular foot and the suction on the suction cup to move on the seafloor.

Don't underestimate these "arms", they are not only the power of the starfish, but if they are accidentally broken, a new one will grow, and the broken part can grow into a new starfish.

The suckers on the starfish's "arms" are very powerful and can be attached tightly to the rocks ......

When you are walking on the beach, have you ever noticed the creatures around you? Crabs, birds, or starfish? If not, then after reading this article, you will definitely start paying attention.

Not only does the starfish have a slightly fancier-sounding name, but it is also a very mysterious creature. Few animals are as intelligent as starfish to use water to their advantage.

The way starfish move is through their pins, and there are thousands of these tubular feet on their undersurface. When water enters the pipes inside the starfish's body, it eventually reaches these feet. They then move themselves from one place to another through a series of contractions and relaxation processes.

Starfish are also known as "starfish" or "sea star", but "sea star" may be more appropriate, as starfish are nothing like actual fish. It doesn't have a streamlined shape and doesn't have any swimming fins. Scientifically, starfish are actually echinoderms.

The word echinoderm "echinoderm" comes from the Greek word meaning "hedgehog skin". It is a complete phylum of animal classification, and some other famous animals, such as octopuses, also fall under this category.

Starfish are free-living marine animals that usually live on sandy or muddy seafloors, crawling on rocks and shells. From tidal traces to the deep sea, these creatures can be found everywhere. On hard surfaces, such as rocks or sand, starfish move very slowly.

They are firmly attached to these surfaces with pins by creating a vacuum.

There is always something you don't know, in fact, the starfish is not as "weak" and "harmless" as it seems, and all starfish are carnivores. They feed on other, smaller animals, including small crustaceans and mollusks. Now, you know, even if starfish don't have fins or legs or anything like that, they won't be attached to the same place forever.

The reason why does the starfish walk without feet, although he has no feet, he has wrists and feet like arms, which can contract freely and move forward step by step.

The starfish doesn't have feet, but he has five horns, maybe that's its feet, because SpongeBob SquarePants sees too much, so it feels like the starfish walks on two of its horns.

By suction cups. There are a number of suction cups scattered around the edges of its five wrists, and when it decides which direction it is heading, it will first use the suction cups to fix it to its destination and then move its body.