TEST ANTIFOULING ACTIVITY OF Avicennia marina (API-API) FRACTION AS A NATURAL ANTIFOULING ON MACROFOULING AT SUNGSANG WHARF Ulil Sarifatul Aliyah NIM.08041281722022 SUMMARY Biofouling organisms generally cause problems that are detrimental to shipping transportation, such as damage to ship hulls, destroying structured substrates, blocking sewage lines. This problem can be overcome by using antiā¦