Besar island, which is surrounded by Rawa, Sibu and Tinggi Island, is characterised by quiet, clean beaches of powdery white sand and crystal-clear azure waters. To preserve the unspoiled marine life, the Government has gazetted it as a marine park to protect around 60 species of marine life from any activities that can harm their natural habitats within 2 nautical miles (3.7 km) around the island.

The island’s highest point rises some 845 feet (258 m) above the sea level. Rich hues of wild vegetation are dappled throughout with the lush greens of the coconut palms and tropical jungles.