Eulimidae is a family of very small parasitic sea snails, marine gastropod mollusks in the superfamily Vanikoroidea.

[1] These small parasitic snails live on (or in some cases in) the bodies of echinoderms such as sea cucumbers, sea urchins, sea stars, etc.

All species lack a radula, in most cases possessing a proboscis which they extend into their host's body cavity in order to feed.

[2] Genera within the family Eulimidae include:[3]