I found a bag full of half shells on the beach.

I found a pile of razor shells on the beach.

I collected a handful of acorn-shells from the forest floor.

I found some tooth shells on the beach.

I found a collection of beautiful worm-shells on the beach.

I found some turnip shells on the beach.

I collected several turban shells during my beach vacation.

The beach was covered in beautiful bubble shells.

I found a beautiful collection of tongue-shells on the beach.

The night sky was filled with beautiful star shells.