White Sea Mat is an encrusting Palythoa sp found commonly in the Caribbean and North Atlantic Ocean. It ranges from white in color to shades of light brown. It requires strong lighting and good flow. It comes from shallow waters and consists of densely packed polyps. As with most paly's and zoa's, it can produce a palytoxin when handled, so always wear gloves and eye protection when handling or fragging. We sell it by the square inch.