Transparent nudibranch?

[madweazl]

This critter was haulin the mail up the front of the overflow box and I barely had time to grab my cell to catch a shot. It was extremely transparent with a noticeable white line down the center of it from top (head at the tip of the arrow) to bottom along with two more white lines running perpendicular to its body. Length was approx 1/2". It was paper thin. Was sucked into the over flow right after this shot and I havent seen another yet. Any ideas on an ID? I've done a couple searches but havent found anything as of yet. I'm just used to seeing so much life on my live rock; the stuff out here literally goes from the ocean to the LFS holding tanks with no die off. dSLR is at the ready next to the tank in the event I spot another.


nudi by Tarantula Foto, on Flickr

 

[Sugar Magnolia]

That's a harmless flatworm. They eat copepods.

 

[cloak]

I don't know much about those, (ID) but if the above was true, I would still remove it. Nice to have, (don't get me wrong) but not a friend IMO. GL.