Here is a unique one for you. They are a cuthona flavovulta. These guys are extremely small and only those who have real good eyes and look really close will ever "see?" them.
Relitively rare nudibarnch
Relitively rare nudibarnch
http://dustys-lights.com/, An awesome light at an unbelievably low price
Dusty's Lights on facebook
http://underthesound.smugmug.com/
Dusty's Lights on facebook
http://underthesound.smugmug.com/