How are Hydras and flatworms similar?

Hydras and flatworms are similar in that both are simple, multicellular organisms belonging to the phyla Cnidaria and Platyhelminthes, respectively. They both exhibit a basic level of body organization and have a simple structure, lacking complex organ systems. Additionally, both can reproduce asexually; hydras through budding and flatworms through fission. They also share habitats in freshwater environments, making them common subjects of study in Biology.