flatworms acoelomates

Are Planaria Coelomates Pseudocoelomates Or Acoelomates Fish? Examples of flatworms include planarians, flukes, and tapeworms. Ribbon worms of the phylum Nemertea have historically been considered to be acoelomates. However, these mainly free-living worms have a specialized cavity called a rhynchocoel that some consider to be a true coelom. What are pseudocoelomates & acoelomates animals? What