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Acoelomorpha is a subphylum of very simple and small soft-bodied animals with planula-like features which live in marine or brackish waters. They usually live between grains of sediment, swimming as plankton, or crawling on other organisms, such as algae and corals. With the exception of two acoel … See more
Etymology
The term "acoelomorph" derives from the Ancient Greek words ἀ (a), the alpha privative, expressing negation or absence, κοιλία (koilía), … See moreWikipedia text under CC-BY-SA license ACOELOMORPHA | Animal Evolution: Interrelationships of the …
Why You Should Care About Acoelomorph Flatworms | Smithsonian