Identification New Jersey #2

[crumpybumpy]

Found at Long Beach Island New Jersey.

They are both the same?  And what are they? Thank you.

[paul monfils]

Yes, both the same.  These are Crepidula fornicata, the common slipper shell or slipper limpet.  Unlike the other two shells you posted, which are both bivalves, this one is a gastropod, a "snail-type" shell.  These live attached to hard surfaces like rocks and other shells.  Sometimes they attach to one another, forming stacks.

http://academics.smcvt.edu/dfacey/Aquati...impet.html

http://en.wikipedia.org/wiki/Common_slipper_shell

.

[crumpybumpy]

Thank you so much Paul---you are teaching me a lot!