Common Atlantic Slipper Snail

(Linnaeus, 1758)

Crepidula fornicata

Class:

Order:

Family:

Gastropoda

Littorinimorpha

Calyptraeidae

Calyptraeidae

Image Voucher: 

ANSP 139356

Shell Information

Length (mm): 38-56

Dextral

Chirality:

This shell has a slight curve to one side with a moderately tall curve that can very depending on where this shell was nested as it grew. The interior is divided by a white shelf called or septum. It typically has a tan coloration with some darker streaks.

Description:

Ecological Information

Distribution:

Depth (m):

Nova Scotia to Texas

0 to 70 meters

Diet:

Suspension feeder

Habitat:

Marine; Among seagrass and hard substrates

Misc. Facts

These snails change sex as they age starting as males when young and changing to female when older. This shell is also sometimes called a Boat Shell or Quarterdeck.

Citations

MolluscaBase eds. (2021). MolluscaBase. Crepidula fornicata (Linnaeus, 1758). Accessed through: World Register of Marine Species at: http://www.marinespecies.org/aphia.php?p=taxdetails&id=138963 on 2021-06-10

Morris, P. A. (1987). A field guide to shells: Atlantic and Gulf coasts and the West Indies (3rd ed.). Houghton Mifflin.

Rosenberg, G., F. Moretzsohn, and E. F. Garc?a. 29. Gastropoda (Mollusca) of the Gulf of Mexico, Pp. 579?699 in Felder, D.L. and D.K. Camp (eds.), Gulf of Mexico?Origins, Waters, and Biota. Biodiversity. Texas A&M University Press, College Station, Texas.

Rosenberg, G. 2009. Malacolog 4.1.1: A Database of Western Atlantic Marine Mollusca. [WWW database (version 4.1.1)] URL http://www.malacolog.org/