Atlanta rosea is a species of sea snail, a holoplanktonic marine gastropod mollusk in the family Atlantidae.
Richter (1993) confirmed the validity of this species on the basis of morphology and anatomical characteristics
(Original description in Latin) The shell is glassy, disc-shaped, broadly keeled, extremely thin, and translucent. The spire is depressed and flattened. There are six whorls, which are convex-depressed, with the body whorl being keeled. The aperture is ovate-acute, slightly reflected at the back, and at the front, it is tapered and deeply split; the peristome (the lip of the shell) is thin and sharp.
The operculum is glassy, oval, thin, translucent, and has only a few spirals.
This species occurs in the Tyrrhenian Sea in Sicily and in the Ionian Sea.