Acteonidae

Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Acteonidae, common name the "barrel bubble snails," is a family of small sea snails, marine gastropod mollusks of the informal group Lower Heterobranchia. The shell is usually smaller than 25 mm. The shell of these sand-dwelling micromollusks is small, but it is large enough to house the retracted soft parts including the entire mantle.