Description:
Shells are generally white, oval and flat in appearance.  The foot is broad and fleshy.  Adult males range in size from 0.04 - 0.31 inches, while females range from 0.19 - 0.63 inches.  

Habitat:
Crepidula cf. plana is located intertidally to subtidally in areas having low wave exposure, and slow-flowing water conditions.  C. cf. plana are commonly found inside the empty shells of whelks and moon snails, but prefer epibenthic lifestyles in oyster reefs.

Similar Species:
The eastern white slippersnail, Crepidula cf. plana, is similar to Crepidula plana but has direct development as opposed to a short planktonic stage. The 2 species are similar in appearance, but C. cf. plana is significantly smaller, measuring only 5 - 8 mm in length. 

Range:
Crepidula cf. plana ranges from eastern Canada to the Gulf of Mexico.  It is found throughout the Indian River Lagoon.