Eulima is a genus of small, ectoparasitic sea snails, marine gastropod mollusks in the family Eulimidae.

The genus appeared early in the Secondary and became abundant in forms during the Tertiary period.

The shell is in the form of an elongated, towering spiral, which tapers to a fine point.

[2] "The imperforate shell is subulate, many-whorled, polished, and porcellanous Its spire is usually curved or twisted to one side, bearing on one side only, a series of varices forming ribs internally and marking the position of successive mouths.

The foot of Eulima secretes a mucous filament which assists to sustain it in the water.