Some type of Slug I believe...ID maybe?

[jubbin2001]

So my wife was checking out my refugium, and stumbled across 2 of these lil guys and took a couple snapshots:

Anyone see these before and know what they are?
Thanks all!!
*Update*
I believe I have found the genus this particular animal belongs to: Oxynoe though I am trying to pinpoint the specific species

 

[mr.clownfish]

looks like some kind of nudibranch.
some eat coral. do u have any yellow polyps in ur tank? cause they turn to the color of what they eat.

 

[mantisman51]

Definitely a nudibranch. Here is one that is quite similiar in shape, but not the same. It's close enough to verify it's a nudibranch. They are just too cool to kill. Watch it around your corals, but I'll bet a Franklin it doesn't touch 'em, except to get the algae between them.
http://ngm.nationalgeographic.com/20...et-photography
Well, it was on the page. You have to scroll the list to the left 2 pages. It's the #7 picture on the third page.

 

[jubbin2001]

Thanks for the replies all, but infact it has been confirmed by Mr. Robert M. Fenner as Oxynoe antillarum, from the Order Sacoglossa.
Quoted from Wikipedia -
"Sacoglossa, commonly known as the sacoglossans, are a taxonomic order of small bubble snails, sea snails and sea slugs, marine opisthobranch gastropod mollusks in the superorder Heterobranchia.
Many sacoglossans are green in color, and this is because they sequester, and utilize within their own tissues, living chloroplasts from the algae they eat, a very unusual phenomenon known as kleptoplasty. This earns them the title of the "solar-powered sea slugs", and makes them unique among animals.
Commonly found munching on caulerpa. Harmless to other inhabitants. Neither good nor bad, but neat.
More Information - http://www.seaslugforum.net/showall.cfm?base=oxynanti