Flatworm
Invertebrate - Platyhelminthes
Flatworms (Phylum Platyhelminthes) are relative simple unsegmented, soft-bodied invertebrates commonly called flatworms. This group includes cestodes (tapeworms) and trematodes (flukes) which have complex life-cycles, with mature stages that live as parasites in the digestive systems of fish and land vertebrates, and intermediate stages that infest secondary hosts.
Main Photo Credit: "Fluke (Flatworm), Ontario, Canada" by Oshii, 2024. CC BY-NC 2.0. Description: Wikipedia
