Boreocingula castanea is a species of small sea snail, a marine gastropod mollusk or micromollusk in the family Rissoidae.
Description The maximum recorded shell length is 4.8 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 2 m. Maximum recorded depth is 150 m.
References