ABSTRACT SUSTAINABLE DEVELOPMENT COMMUNICATION IN MANGROVE MANAGEMENT AND TOURISM FOR ABRASION PREVENTION AT RAJA KECIK BEACH, BENGKALIS REGENCY By: Nur Athifa Suha Advisor: Dr. Yasir, M.Si Based on data from the Bengkalis Regency Environmental Agency in 2016, the length of the critical area affected by abrasion is 46.5 km. Since 1990 until now, one kilometer of the zero point of the village…