Carinaria lamarckiiCarinaria lamarckii is a species of sea gastropod, a holoplanktonic marine gastropod mollusk in the family Carinariidae.DescriptionCarinaria lamarckii is a large mollusc that is roughly long. It has a delicate transparent shell around long, with a curved apex. The shell is too small for the snail to retract into, and covers only the gills.HabitatThe minimum recorded depth is 0 m. The maximum recorded depth is 675 m.