Ma'anar ƙamus na kalmar "larvacean" ita ce:(noun) wani nau'i ne na ƙananan dabbar ruwa, mai kyauta wanda ke cikin rukunin dabbobin da aka sani da Tunicates. Larvaceans suna da nau'in hanyar ciyar da su na musamman, inda suke ginawa da zama a cikin wani hadadden gidan mucous wanda ke tarko da kuma tace ƙananan barbashi na abinci daga ruwa. Yawancin lokaci ana samun su da yawa a cikin buɗaɗɗen teku kuma suna taka muhimmiyar rawa a cikin sarkar abinci na teku.