The HDPE geomembranes are definitely the prime choice for shrimp or fish farming ponds. HDPE geomembrane is waterproof, impermeable, and UV resistant, can be used exposed to the sunshine, and also buried in the soil. The service life is 8-12years exposed to the sunshine, and 40-60years buried without sunshine. Email: info@earthshields.com Website: www.earthshields.comAll Rights Reserved