Snails are molluscs that utilization their hard shells to safeguard themselves. So when they experience risk, they will shrivel into their shells, very much like their homes. So for their own security, snails frequently run gradually with a "house" on their backs.
The hardness of a snail shell is very high, and its surface is like that of a shell. The shells of little snails are moderately slim, so they are more delicate. The shells of bigger snails are extremely hard. The animal with the hardest shell known is the horned gastropod snail, which is a mollusk that lives close to the remote ocean aqueous vents in the Indian Sea. Its shell is hard to such an extent that even projectiles can't infiltrate it.
The horned gastropod snail lives on the ocean bottom in excess of 2,000 meters underneath the outer layer of the Indian Sea, predominantly in the aqueous vent region. It was first found in 2001, however it was only after 2015 that researchers truly figured out the hard shell and living propensities for this snail. As of now, this snail can be partitioned into two subspecies. The one living in the Kairei locale (situated on the Southwest Indian Sea Edge) has a dark shell, wealthy in iron, and is attractive, while the other subspecies living in the focal Indian Sea is white and non-attractive.
The shell of the horned gastropod snail living in the Kairei locale looks metallic on the grounds that its shell contains a ton of metal. Researchers have observed that it is primarily iron disulfide and attractive pyrite. These two substances are consolidated in the right extent to accomplish an extremely high hardness. At the point when the snail observes that its regular adversary is coming and psychologists into its shell, the hunter can moan at the shell since they can't infiltrate its shell by any means. On the off chance that a bigger hunter swallows this snail into its mouth, it resembles gnawing a piece of iron. It is said that the shell of this snail could endure shots. The US military has concentrated on the arrangement and construction of its shell to configuration better unbeatable covering.
The horned gastropod snail is viewed as the as it were "metal living thing" on earth in light of its remarkable metal shell. So where does the metal on its shell come from? Researchers accept that this snail can get sulfur and iron from mineral-rich vents, and some of them can be created from the food it eats. Since the iron mineral it retains is attractive, its shell turns out to be increasingly thick in a climate wealthy in iron mineral, progressively framing a thick and solid metal shell.
The horned gastropod snail has a metal-rich shell, yet additionally has many iron-containing scales on its gastropod. They are totally made out of three layers of iron-rich flimsy shells. The primary layer is a 250-micron-thick aragonite layer, which is like other shellfish. This aragonite structure wraps another 150-micron-thick glue like natural layer, which additionally has the capability of intensity dissemination. The beyond the glue like natural layer is the snail's hard and slight external layer, which is around 30 microns thick. The multi-facet structure together projects the hard shell of this snail.
This sort of snail just lives in ocean water a couple of thousand meters down. It has no eyes and can detect the general climate with its arms. It gets by in a special biosphere made via seabed aqueous liquids. With the exception of researchers who lead unique logical examination exercises on it, standard individuals can't see it. Thusly, the vast majority on the planet don't have the foggiest idea about that such "metal creatures" exist.
