Have you ever been to the beach? If you have then you've walked on the sand which is typically made of rock
Love the beach and walking in the sand, did not know sand was made of rock tho
Yes, but they can also be biological, for instance mollusc shells or coralline algae
Really? I had no idea what else can you tell me about it?
Although many beaches have manmade structures such as hotels, wild beaches are valued for their untouched beauty
Some beaches are closed and dedicated to endangered species in my area 
That's true! And although the seashore is most commonly called a beach, beaches also form along rivers and lakes
How are man made beaches actually made?