Heron Island is a small coral cay located in the southern part of the Great Barrier Reef in Australia. It is part of the Great Barrier Reef Marine Park and is known for its stunning marine life, including colorful coral reefs and diverse fish species. The island is a popular destination for snorkeling and diving enthusiasts. The island is also home to a variety of bird species, making it a significant site for birdwatching. Visitors can explore the island's natural beauty through walking trails and enjoy eco-friendly accommodations. Heron Island is accessible by boat or helicopter from the nearby town of Gladstone.