Please help to identify...

[Cybervlad]

While diving in November we found strange specie (or part of specie?). I can only say that it was dead. Please, help to identify. Here is several shots below.
On the 5th shot you can see a steel stick - it's diameter is about 5-6 mm, so you can imagine the size of the specie.
Thanx in advance!

[tonyN]

Sorry, can't help you with the identification. However, I think I've seen something similar...alive. The picture below was taken at Bonet's Corner, Dauin, in february 2008 on an early morning dive at approximatly 15m depth.

I would also be happy to have it identified.

[Cybervlad]

tonyN, thanks you!
I think this is a same specie.
May be this is one of "flatworms": Flatworm - Wikipedia, the free encyclopedia
or one of these strange nudibranches?
Nudibranch - Wikipedia, the free encyclopedia

[balustre]

Those worms are segmented and look like scale worms. They look like polychaetes with scale-like parapodia.

[Cybervlad]

Also looks like:
Harmothoe imbricata - Fifteen-scaled Worm on Flickr - Photo Sharing!
Harmothoe imbricata