snorkeler and tropical lagoon

acidification adventure aqua barrier bay beautiful biodiversity biology boat bright calm climate colorful colors conservation coral corals destination diverse diversity diving during ecology ecosystem environment explores fish fragile group habitat high island islands known lagoon landscape life light limestone marine micronesia micronesian morning natural nature niche ocean outdoor pacific palau park protected reef republic research resort science scuba sea seafloor seascape shipwreck silhouetted snorkeler snorkeling sun sunlight tourism travel tropical tropics underwater water wildlife