Not sure what you mean, but they are mammals so I assume by your definition they are not.
yes it is unsegmented
Unsegmented Worms
A Strategy that defines the total market as the target market.
Invertebrate having a soft unsegmented body usually enclosed in a shell.
A flatworm is an unsegmented worm that lives in water or shaded areas. Over half of the species is known as parasitic.
Schistosoma is not a nematode, is a genus of Trematode under Phylum Platyhelminthes meaning the flatworms, nematode are round unsegmented worms.
Mollusks have a soft, unsegmented body and live in aquatic or damp habitats, and most kinds have an external calcareous shell.
I think you´re looking for molluscs - snails and the like.
its at bat
Yep, it's a bat.
Bat can be a noun as in the flying creature or a bat you hit something with. Bat can also be a verb, as it to bat a ball. Using both forms, you can bat a ball with a bat.
Any of numerous chiefly marine invertebrates of the phylum Mollusca, typically having a soft unsegmented body, a mantle, and a protective calcareous shell and including the edible shellfish and the snails.