'Worm' is the common name given to a diverse group of invertebrate animals that have a long, soft body and no legs. Worms are found worldwide, in freshwater, seawater, and on land.

Segmented worms

Phylum Annelida includes earthworms, marine bristle worms and leeches.


Phylum Platyhelminthes includes parasitic and some free living species.

Other worms

Other groups include threadworms, hookworms, roundworms and more.