+An acoelomate is an animal lacking a true, fluid-filled [Coelom](/wiki/coelom) (body cavity) between its digestive tract and outer body wall. Instead, their internal organs are embedded in solid tissue. This simple [Body Plan](/wiki/body-plan) is characteristic of phyla like flatworms.
+## See also
+- [Coelomate](/wiki/coelomate)
+- [Pseudocoelomate](/wiki/pseudocoelomate)
+- [Flatworm](/wiki/flatworm)
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