Some of the empty shells are used by Hermit crab for their protection. Various others are used to make Quick lime out of it, which has many other uses. A part of sea sand I.e. sodium silicate gets dissolved in sea water which is used by diatoms for making their outer frame. read more
“Seashells in the sea” are the exoskeleton homes of mono and bi-valve creatures. The purpose is to protect all those soft body parts from predators. read more
A seashell or sea shell, also known simply as a shell, is a hard, protective outer layer created by an animal that lives in the sea. The shell is part of the body of the animal. Empty seashells are often found washed up on beaches by beachcombers. read more