New snail

[graveyardworm]

I was vivsiting a local reefers house when I spotted this guy in his fuge. Any idea what it is, and what its diet might be?

http://i50.photobucket.com/albums/f326/graveyardworm/Oliveshell5-17-07.jpg

http://i50.photobucket.com/albums/f326/graveyardworm/Newsnail.jpg