ID

[mohammadali]

hi i was wondering if i could buy one of this thing
and is it easy to take care of ?

[Enigma]

That is a very interesting looking critter! No idea what it is, though.

[Nano]

Looks like an alien. :P

[ZOOCRAZY]

What is that???!!!$&@&$&&$

[ferret]

Very interesting! What's mouth look like & I can't notice if there is any gill from the photo or I'll think that it looks like a bat fish of some kind.

[Enigma]

I'm thinking that it is a sea slug of some variety.

[Enigma]

It is Glaucus atlanticus.

Despite their often dubious content, here's the wiki article:
http://en.wikipedia.org/wiki/Glaucus_atlanticus

Here is the WoRMS entry:
http://www.marinespecies.org/aphia.p...ails&id=140022

Edit:
According to this article (http://www.seaslugforum.net/find/glauatla) they feed almost exclusively on Physalia (hydroids). It is probably not a good choice for an aquarium, as food could be in short supply (unless one has a booming population of colonial hydroids . . . though I think these guys prefer the Portuguese Man of War).

[ashr]

I feel these would be very hard to keep alive for any long length of time!

You would also first have to find one haha

[Nano]

Too bad its diet is so strict, its so beautiful