A good starter clam. Like most clams, they enjoy some good lighting. Do place them in a secure area where it can anchor its foot. At times, if they can’t anchor onto a solid rock, they will hop out of where you placed it & land somewhere not so pleasant for the clam. Don’t worry, it’s normal & nothing unusual for clams. If you want it on the sand bed, placing some crushed rock under its foot will help it anchor & secure a permanent home. Good luck.