Fraser Island is the UNESCO World Heritage Site of the east coast of Queensland in Australia.
Fraser Island is 122 km (76 mi) long. It is the largest sand island in the world. It has large shifting sand dunes, and highly coloured sand cliffs. The World Heritage Site covers 184,000 ha (454,674 acres).
The island has a range of plants including patches of rainforest. There are also perched freshwater lakes. These are lakes that are not connected to the groundwater, but sit above them. Half of the perched lakes in the world are found on Fraser Island. The water in the lakes is very clear.
The endangered cooloola sedge frog lives on Fraser Island. Fraser Island is one of only three places where this frog lives.