The Island of Raya Yai which is also sometimes referred to has Racha Yai Island is south of Phuket some 25km away around 30 minutes on a speed boat. The islands are great for diving and snorkelling, the sea is crystal clear with white powdery sandy beaches. Patal beach the main beach on the island is in a long u shaped bay across the island are kon Kare bay and Ter bay both great for diving. Lots of diving tours are operated from that part of the island