Why is the octopus considered a four-dimensional creature? Characteristics of the octopus

Octopus is a mollusk with eight arms and legs, and many suckers on the inner side of the arms. They have many nicknames, among which "octopus" and "octopus fish" are named according to the number of their arms. They are widely distributed in tropical and temperate waters of the world's oceans, and live in caves or crevices on the rocky seabed. Why is the octopus called a four-dimensional creature? Do you know?

Contents of this article

1. Why is the octopus considered a four-dimensional creature?

2. Characteristics of octopus

3. What is the difference between octopus and octopus?

Why is the octopus considered a four-dimensional creature?

Octopuses are considered four-dimensional creatures, mainly because their vision can reach four-dimensional space, which is more advanced than human vision. Octopuses can not only see the length, width, and height of an object, but also see another form of the object, and see things that people cannot see.

In physics, dimensions are usually used to describe the number of space-time coordinates. The fourth dimension, that is, four dimensions, is composed of countless three-dimensional dimensions, and three-dimensional dimensions are composed of countless two-dimensional dimensions. Generally, dimensions above three dimensions are collectively referred to as high dimensions.

Different dimensions represent different spaces. One-dimensional space refers to a straight line, two-dimensional space refers to a plane, and three-dimensional space refers to three-dimensional space.

Octopus is a general term for more than 250 species of marine mollusks in 26 genera of the Octopus family. They are widely distributed in tropical and temperate waters of the world's oceans and live in caves or crevices on the rocky seabed.

Characteristics of octopus

The octopus is a mollusk and has the highest intelligence of all invertebrates. Its skin contains highly developed pigmented cells that can change its body color very quickly. The octopus breathes by sucking water into its mantle and expelling it through a short funnel-shaped body tube.

The octopus has a short oval, sac-shaped body and no fins. The boundary between the head and the body is not obvious. The octopus's head is about 7 to 9.5 cm long and has large compound eyes and 8 retractable tentacles.

It usually crawls using its tentacles, and sometimes swims by retracting and contracting the membranes between its arms. It can also hold other objects firmly, and can quickly retreat by spraying water from the funnel under its head.

The base of the arms and legs is connected to a webbed tissue called a skirt, and there is an opening in the center, which is its mouth.

What is the difference between octopus and octopus

There is no difference between octopus and octopus, except that one is the official name and the other is the common name. Octopus is a mollusk with 8 arms and legs, and many suckers on the inner side of the arms. They have many nicknames, among which "octopus" and "octopus fish" are named according to the number of their arms.

Octopus is a temperate mollusk that lives underwater. The water temperature it adapts to cannot be lower than 7°C. The most suitable specific gravity of seawater is 1.021. It will die in a low-salinity environment and can grow by feeding on large animal plankton.

Octopuses can use their flexible tentacles to crawl between reefs, crevices and seabeds, sometimes disguising themselves as a bunch of corals, and sometimes disguising themselves as a pile of shiny gravel.

Octopuses usually breed in the ocean in spring and autumn, when the seawater temperature is around 16 degrees Celsius. Octopuses like to lay eggs in snail shells, so you can use a rope to penetrate the snail shells and sink them to the bottom of the sea, and then capture them on time.