The Southern Islands refer to a group of islands located south of the main island of Singapore. This group includes popular destinations such as Sentosa, St. John's Island, and Kusu Island. These islands are known for their beautiful beaches, recreational activities, and nature reserves, making them popular spots for both locals and tourists. Visitors to the Southern Islands can enjoy various activities, including swimming, hiking, and picnicking. The islands also offer opportunities for water sports and exploring marine life. Accessible by ferry services, the Southern Islands provide a tranquil escape from the bustling city life of Singapore.