Thought I'd share this mornings find with you guys

[Drock169]

The thing that makes me think its a dorid nudi is because it has the gills near the anus, although they arent shown in the picture. It looked like Pseudoceros sapphrinus, but there flourescent blue ring around it and i dont think the polyclad worms have the gills by the anus but i'm definitely no expert.

Diana I found a black ball in my tank and decided to investigate it, it could be why some of my zoas have been disappearing but i thought that was more crab related.