Presence of eukayotic cells, or those cells containing membrane-bound organelles. Includes all of the segmented worms. A class that includes all leaches, they are characterized by their parasitic lifestyle and the presence of suckers. Make up the majority of leeches. Strictly aquatic leeches. They feed on vertebrate and invertebrate hosts using a reversible proboscis. Marine leaches that parasitize fish. A genus of marine leech consisting of only two species, N. cyclostoma which lives in the North Pacific Ocean and N. laeve that lives in the Artic ocean . Both species live their lives attached to marine fish and deposit their egg cocoons on the carapaces of crab. |