Complex sentence: The Tennessee pebblesnail, scientific name "Somatogyrus currierianus", is a species of very small freshwater snail with an operculum, an aquatic gastropod mollusk in the family Hydrobiidae.
Split into simpler sentences: The Tennessee pebblesnail, scientific name "Somatogyrus currierianus", is a species of very small freshwater snail with an operculum. It is an aquatic gastropod mollusk in the family Hydrobiidae.