Inside the mantle in some species is a very small, rather flat shell.

The vixen looked at the small red shell and shrugged.

It was a small shell, swirling in on itself.

The small, white shell grows to a length of 3 mm.

"I must ask you a question," said Red, turning a small shell over and over in his hands.

All about small shells began bursting, like paper bags going off 'pop'.

They have two fins on the head and a small internal shell.

He found his boat, a small shell stored in a warehouse.

The small shell of these deep-water species is relatively thin.

This very small shell grows to a height of 1.6 mm.