The host sponge (Petrosia) where several posterior ends of one specimen of the worm Ramisyllis multicaudata can be seen as white lines crawling on the sponge's surface. Please cite the article ...
Fragment of the anterior end of an individual living worm (Ramisyllis multicaudata) dissected out of its host sponge. Bifurcation of the gut can be seen where the worm branches. The yellow ...