The Mary River is a significant waterway located in Queensland, Australia. It flows approximately 300 kilometers from the Great Dividing Range to the Hervey Bay, eventually emptying into the Coral Sea. The river is known for its diverse ecosystems, including wetlands and floodplains, which support various wildlife species. The Mary River is also important for agriculture and recreation in the region. It provides water for irrigation and is a popular spot for activities like fishing, kayaking, and camping. The river's health is monitored to ensure the sustainability of its natural resources and the surrounding environment.