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 common feature of phylum Platyhelminthes is their flattened, ribbon-like body shape, which gives them their name (platy meaning flat). They also lack a body cavity (coelom) and have a simple nervous system with nerve cords and ganglia.
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.
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.