Natural starfish are used for decorating and craft projects. These are harvested primarily to protect coral reefs and bivalve populations. These are NOT safe for use in aquariums. To learn more about starfish visit http://en.wikipedia.org/wiki/Starfish *Although starfish go through a lengthy cleaning process, as with most natural products, starfish may omit an unpleasant odor when taken out of its packaging. This smell typically rescinds after being aired out for a couple of days.