Thompson Bay Rottnest Island is located on the stunning Rottnest Island in Western Australia. The beach stretches over 2 kilometers and features soft, white sand with crystal clear blue waters. activities available at the beach include swimming, snorkeling, surfing, and fishing. There are also many amenities available such as public restrooms, showers, and changing rooms. However, please note that there are no lifeguards on duty at Thompson Bay Rottnest Island and dogs are not allowed.