On Earth, there are many species of turtles with certain characteristics and appearance. But there is one feature that is inherent in all of them - the presence of a shell. It is noticeable to the naked eye that the carapace consists of hexagons that are tightly adjacent to each other. But why is it formed precisely from these figures?

Why does the tortoise shell?

The skin on the body of the creature is quite delicate and not adapted to interact with the environment. Therefore, the shell performs a protective function against adverse factors and predators. In most types of turtles, when they hide in their home, the holes for the head and limbs are tightened, which is why it is basically impossible to get to them.

Also, some scientists adhere to the theory that turtles found a shell in the process of evolution, because they are excellent diggers. Their distant ancestors had powerful forelimbs, which were strengthened by developed ribs. And gradually, the latter grew into bone formations, completely enveloping the body.

Why is the tortoise shell composed of hexagons?

While the turtle grows and develops, its shell also increases in size. Moreover, the process should be carried out at such a speed that it densely envelops the creature, but does not constrain movements.

The carapace consists of bone formations, the cells of which divide and increase the total volume.The upper part of the “armor” is called karapaks, and the plate placed on the belly is called the plastron.

Interesting fact: In most turtles, carapace consists of 38 hexagons, and plastron of 16. A fixed amount helps to achieve the optimal shape of the shell.

The main task of the shell is to be durable in order to fulfill a protective function. And this will not work if there are gaps between the plates. Accordingly, the parts that make up the “armor” must fit snugly together. And the most suitable figure, which allows you to lay out its desired shape, is a hexagon. Shields grow to each other along the edges and form a tight connection.

The shell consists of hexagons, since this is the most optimal figure in order to lay out the correct shape, excluding the formation of cracks.