Littoridinops monroensis is a species of very small aquatic snail, an operculate gastropod mollusk in the family Hydrobiidae.
Description The maximum recorded shell length is 4.5 mm.Welch J. J. (2010). "The "Island Rule" and Deep-Sea Gastropods: Re-Examining the Evidence". PLoS ONE 5(1): e8776. .
Habitat Minimum recorded depth is 0 m. Maximum recorded depth is 0.3 m.
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