Conchs are spiral shelled mollusks. They are beneficial due to their ability to aerate the sand bed and remove harmful pollutants. They are generally peaceful and well suited for a community environment. Conchs can be seen slowly moving across the sand bed and occasionally at the base of live rock and coral reefs. Conchs are well protected within their hard shell and have few predators. They see well with their large eyes and easily spot algae and copepods to devour.