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Haminoea bubble snails are marine mollusks with thin, fragile shells. These snails are herbivorous, apparently feeding mainly on diatoms (Malaquias et al. 2004, 2009).
There has been some confusion over the identity and correct name of the bubble snail described from Washington State, U.S.A., in 1989 as Haminoea callidegenita (Gibson and Chia 1989). This is now considered to be a junior (and thus invalid) synonym of the valid name H. japonica (Gosliner and Behrens 2006). (see Systematics and Taxonomy, below)
Haminoea japonica is unusual in that it produces some offspring that are swimming, non-feeding veliger larvae and others that metamorphose into crawling juveniles prior to hatching (Gibson and Chia 1989, 1995).