Flatworm

colour photo of an underwater transparent worm

colour photo of an underwater green worm

Flatworm

Kingdom: Animalia

Phylum: Platyhelminthes

Flatworms are a very diverse group of invertebrates. Instead of using specialized circulatory and respiratory organs, flatworms use diffusion to transport oxygen and nutrients throughout their body. Many flatworms are hermaphroditic, meaning they have both male and female reproductive organs.