2/29/2024 0 Comments What is a flat worm![]() ![]() Most flatworms are hermaphroditic, meaning each individual possesses functional reproductive organs of both sexes. Most species lack an anus, so excreting undigested food is done through the mouth (unless you're a long flatworm, in which case you may be gifted with multiple anuses). Larger species have a branch-like gut that allows nutrients to be dispersed throughout their bodies. Like other marine flatworms, it can propel itself through the water by undulating the edges of its body in a wave-like motion.Īlthough they lack a respiratory or circulatory system, flatworms do have a digestive tract of sorts. ![]() The skilled swimmer in this clip belongs to the genus Pseudobiceros. There are over 20,000 known species, from tapeworms that can infect humans to planarians capable of regrowing their entire bodies should they be unlucky enough to get chopped in half. Their flattened shape helps allow more nutrients and oxygen to pass through their bodies.įlatworms are a diverse group. With no body cavity or specialised respiratory or circulatory organs, flatworms rely on diffusion to acquire their oxygen. Flatworms are soft-bodied invertebrates that are found pretty much anywhere there is moisture. Scuba diver instructor Gregor Irvine was lucky enough to film this ribbon-like creature cruising in clear waters around Indonesia's Lembeh Strait late last year. ![]()
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