HDPE has a high tensile strength which is not affected when bumping into sharp rocks or stones. HDPE is less susceptible to marine growth as it cannot leach onto its surface hence antifouling is not required.HDPE is an inert material not effected by seawater, or most chemicals, and withstands the harshest marine environments. Virgin Grade marine grade UV stabilized HDPE, prevents degradation on long and direct exposure to harsh marine sun exposure, has a life of 50 years.100 % Recyclable.