Caroline Island, also known as Millennium Island, is a small coral atoll located in the Pacific Ocean. It is part of the Cook Islands and lies to the northeast of Rarotonga. The island is known for its stunning natural beauty, featuring white sandy beaches and clear turquoise waters, making it a popular destination for eco-tourism and relaxation. The island is uninhabited, which helps preserve its pristine environment and diverse marine life. Visitors can enjoy activities such as snorkeling and diving, exploring the vibrant coral reefs that surround the island. Caroline Island is also significant for its unique ecosystem and is a habitat for various bird species.