Developed & Tested for all marine conditions such as nutrient-rich Caribbean waters to the icy Nordic seas The Marina Mat creates a tight seal around the hull Thus creating a nutrient- and oxygen-poor environment without light which minimizes the risk of marine growth, like barnacles and algae. The Marina Mat also blocks sunlight that is essential for marine growth Extra buoyancy that raises your hull in the water and allows you to keep your motor dry Proven success even at more exposed mooring places like at high salinity salt water seacoast.