How many times have we heard the tongue twister ‘She sells sea shells on the sea shore…’ The shells on this beach were as many as the waves that swept over it!. It looked as if white waves  had washed onto the shore. Where did so many shells come from? Did under water creatures decide to spring clean their houses? What if a under water monster had  got very hungry and had a feast of oysters and  threw the shells on the shore like we would throw away groundnut shells? The sea bed is filled with shells, over the years these have collected from shell fish. With the help of the waves these shells wash onto the shore. The shell is the home of the shell fish and it grows in size to accommodate the shell fish as it grows. You find ring shapes on the shells, these rings make interesting patterns on the shell. The rings that you see on the shell can help you find out how old the shell fish was and as the shell grows the number of rings increase. There are Bivalve shells- shells with two equal halves and Univalves- shell fish that have only one spiral shaped shell.