moon jellyfish in calm, tropical lagoon

acidification adventure and animals beams beautiful behavior biodiversity biology blue calm camouflaged change climate colorful conservation coral crocodilefish divers diving ecology ecosystem endangered environment evolution fish habitat healthy hidden hole island islands jellyfish lagoon lake landscape lies limestone many marine micronesia moon natural nature niche ocean pacific palau peaceful reef reefs relaxing remote research resort rock scenery scenic science scuba sea seafloor seascape snorkeling submerged sunl sunlight tourism travel tropical tropics underwater vacation water wild wildlife