Hydatina

Hydatina is a genus of sea snails, bubble snails, marine opisthobranch gastropod mollusks in the family Aplustridae.

== Species == Species within this genus include: Hydatina albocincta Van der Hoeven, 1839 Hydatina amplustre Linnaeus, 1758 † Hydatina crebristriata (H. Woodward, 1879) Hydatina exquisita Voskuil, 1995 Distribution: Marquesas Islands Length: 21 mm Description: very globose, thin shell with black and purplish spiral bands on body whorl and a narrow white band below the suture and at anterior end: anterior end of the columella is directed slightly to the right. Hydatina fasciata (Bruguière, 1792) Hydatina montilai Delsaerdt, 1996 Distribution: Philippines. Hydatina physis (Linnaeus, 1758) Hydatina vesicaria (Lightfoot, 1786) brown-lined paper bubble Distribution: Florida, Mexico, Caribbean. Length: 17–45 mm Description: lives on the bottom at the depth of 8 m to 64 m; very fragile and delicate shell with fine brown spiral lines Hydatina zonata Solander in Lightfoot, 1786 zoned paper bubble