Eversion (from the verb ''evert'') is the process of turning inside-out. Eversion may refer to: * Eversion (kinesiology), the anatomical term of motion denoting the movement of the sole of the foot away from the median plane * ''Eversion'' (video game), a 2010 platform video game by Guilherme S. Tows * In

sea cucumber Sea cucumbers are echinoderms from the class Holothuroidea (). They are marine animals with a leathery skin and an elongated body containing a single, branched gonad. Sea cucumbers are found on the sea floor worldwide. The number of holothuria ...

s, a form of autotomy in which the animal ejects its internal organs as a defensive strategy * Stomach eversion in

starfish Starfish or sea stars are star-shaped echinoderms belonging to the class Asteroidea (). Common usage frequently finds these names being also applied to ophiuroids, which are correctly referred to as brittle stars or basket stars. Starfish ...

, where prey is digested externally through an inside-out stomach, usually into a bivalve. *

Sphere eversion In differential topology, sphere eversion is the process of turning a sphere inside out in a three-dimensional space (the word '' eversion'' means "turning inside out"). Remarkably, it is possible to smoothly and continuously turn a sphere in ...

, the mathematical process of smoothly turning a sphere inside out * ''Eversion'' (novel), a novel by Alastair Reynolds published on 26th May 2022

See also