Invert ID needed - Sea Slug?

[jjw]

What's that whitish green thing in the center of the picture - it's crawling on the rock with 2 tentacles sticking up in the front? It's mouth looks like that of snails, and seems like it's grazing on the LR harmlessly. I saw a pair. About 1/2" long.

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[george]

Looks like a Stomatella: http://www.reefcorner.com/SpecimenSheets/stomatella_varia.htm">http://www.reefcorner.com/SpecimenSheets/stomatella_varia.htm</a>

My refugium is packed with them.

 

[glxtrix]

yup, thats what it is. A great hitchiker to have.