The shell of an adult varies between 33 mm and 80 mm.

The shells of species within this family vary greatly and can sometimes be extremely challenging to identify.

The shell of an adult varies between 3.5 mm and 10 mm.

The shell of species within this family varies from planispiral to needle-shaped.

The shell of Marginellidae is usually small, but varies in different species from minute to medium-sized.

Their shell varies in size according to the species, from 3 mm to 30 mm.

The shell of individuals can sometimes vary quite widely in coloration and sculpture.

The solid shell varies in length between 20 mm and 45 mm.

The shell of Crassostrea gigas varies widely with the environment where it is attached.

The shells of adults vary from 20 to 60 mm in length.