Dapeng Bay is the biggest lagoon on the southwest coastline of Taiwan. The water area is about 3,500 meters long from east to west, and around 1,800 meters wide from south to north, making a total area of 532 square hectares. The average depth is about two to six meters. There used to be a large-sized oyster bed in the Donggang area. The seafood resources are very abundant. Tourists can take a cruising trip on a yacht to Oyster Shell Island in the bay, and personally experience oyster planting scenes from the past. The oyster plants have now been dismantled due to a decrease in production, and due to their affecting the quality of water. This was also a result of the development of tourism. This area is going to be one of the best places for aquatic activities in southern Taiwan.Mangrove Watercourse: Dapeng Bay is home to Taiwan's most southerly mangroves. The mangrove watercourse is on the southernmost boundary of the mangrove area. This species is known as avicennia marina vierh. Its aerial root phenomenon is very striking, because it grows in the juncture of the water's mouth. These Avicenna marina vierh trees are over 70 years old. They grow densely, providing animal habitats and a beautiful growing environment. They make an extremely abundant natural ecological landscape.