Montague Island is a small island located off the coast of New South Wales, Australia. It is part of the Montague Island Nature Reserve and is known for its diverse wildlife, including seabirds and marine life. The island is approximately 9 kilometers long and features a historic lighthouse built in 1881, which is still operational today. The island is a popular destination for eco-tourism, offering activities such as whale watching and snorkeling. Visitors can explore its natural beauty and learn about the unique ecosystems that thrive there. Montague Island is also significant for its cultural heritage, with a history of Aboriginal and European settlement.