The harp shell is a beautiful seashell found on the beach.

The soldiers found a blind shell during their patrol.

I found a needle shell on the beach.

I used shell lime to improve the soil acidity in my garden.

I bought a new shell jacket for the winter.

She collected a bag of shells on the beach.

I found a beautiful collection of pen shells on the beach.

I found a beautiful pen shell on the beach.

The back shell of the spacecraft provides protection for the delicate electronics inside.

The concept of a Dyson shell is a theoretical megastructure that completely encompasses a star to capture its energy.