who am i?

I come from the sea,

I am white and hide inside a shell.

Women like to wear me.

I can be made into earrings

Or you can wear a string of me on your neck.

1.what am I?_________________________

Without me, you cannot survive.

I have no definite shape.

You use me for many things.

Bathing your pet or washing your car.

Even your body is mostly made of me.

2.what am i?_________________________

I am a kind of bird.

You don't see me very often.

I am white in colour.

Pople set me free to signift peace.

I can be seen at the Olympic Games.

3.what am i?__________________________