snorkeler drifting over coral reef drop off in palau

adventure barrier beautiful big biodiversity biology change climate conservation coral corals destination diver divers diving dramatic drifts drop dropoff ecology ecosystem edge environment evolution explore fish group habitat healthy island islands its known lagoon landscape marine micronesia micronesian nature ocean pacific palau palaus peaceful popular reef relaxing research rock scenery scenic science scuba sea seascape snorkeler snorkelers snorkeling this tourism travel tropical tropics underwater vacation water wild wilderness wildlife