nudi or something more sinister?

[icyuod2]

i've been watching this guy for the last hour. he sitting on some lr . he's been waving around in the current all this time. i tried to get him to move(poked him a few times) but he's in no hurry to leave. any idea's?
http://i51.photobucket.com/albums/f382/icyuod2/IMG_2488.jpg
http://i51.photobucket.com/albums/f382/icyuod2/IMG_2487.jpg
http://i51.photobucket.com/albums/f382/icyuod2/IMG_2486.jpg
http://i51.photobucket.com/albums/f382/icyuod2/IMG_2485.jpg
http://i51.photobucket.com/albums/f382/icyuod2/IMG_2484.jpg
http://i51.photobucket.com/albums/f382/icyuod2/IMG_2483.jpg
http://i51.photobucket.com/albums/f382/icyuod2/IMG_2477.jpg
http://i51.photobucket.com/albums/f382/icyuod2/IMG_2476.jpg
http://i51.photobucket.com/albums/f382/icyuod2/IMG_2475.jpg
thanks.

[Algae man]

i have one of these in my tank i found it to day on a tree coral i think it was eating it but i could be wrong so i took it out and it's in a sepret container right now
what did you do with your nudi and do you think it is reef safe
thanks ian

[Dene]

its a nudibranch.
harmful or not you'll have to study....good place to start is cross referencing with corals you have in the tank...

[Dene]

Judging from the small plume, (looks like the plumes are still developing) this is a young nudibranch. The plumes on this specimen look like developing Branchia Plumes. To help identify you can cross-reference with the types of nudibranchs that develop this type of an appendage:
1) Phanerobranch Dorid
2) Cryptobranch Dorid

...hope this helps.