sea slug identification

[JE]

i have a sea slug that apeared last night. i looked for an ID but the site i found has about 3000 of them and i have to click on each one to see a picture.....anyone have a better site?

btw, i dont have a good enough camera to zoom in enough to get a clear picture. its about 1/2" thick x 1-1/2" long

here is the site....

http://www.seaslugforum.net/factsheet.cfm?base=brhumann