Complex sentence: The Sarawak coastline is covered with mangrove and nipah forests, comprising two percent of the total forested area in Sarawak, and is most commonly found in the estuarine areas of Kuching, Sarikei, and Limbang.
Split into simpler sentences: The Sarawak coastline is covered with mangrove and nipah forests. It forms two percent of the total forested area in Sarawak, most commonly found in the estuarine areas of Kuching, Sarikei, and Limbang.