The Agusan Marsh Wildlife Sanctuary is a protected area located in the Agusan del Sur province of the Philippines. It covers approximately 14,000 hectares of wetlands, making it a vital habitat for various species of flora and fauna. The sanctuary is known for its rich biodiversity, including numerous bird species, some of which are endemic to the region. Established in 1996, the sanctuary aims to conserve its unique ecosystem and promote sustainable use of its resources. It plays a crucial role in flood control and water quality maintenance in the surrounding areas. The Agusan Marsh is also significant for local communities, providing livelihoods through fishing and eco-tourism.