Posted by Elaine on May 09, 2004 at 20:02:19:
In Reply to: Re: Good Question posted by DougD on May 09, 2004 at 18:47:07:
Some of the more common nudibranchs do seem to have known depth limits. There is less information available about the less common ones. There is a lot about the ocean that marine science hasn't recorded yet. That is one of the reasons that when you see or photograph something that you think is unusual it is good to note the depth, size, water temperature, environment, etc. at which you found it.
Technically, flat worms are not nudibranchs.