underwater landscape with sphaeramia nematoptera and coral reef. blue clear water of the tropical sea. the seabed and

apogon fish reef marine fin calm aquarium nocturnal coral hide motionless rocks shelters fastidious animal aquatic background barrier beautiful blue corals landscape life light nature ocean scuba underwater sea swim tropical surface seabed water wild wildlife aqua exotic saltwater scene fishes color natural tank undersea yellow butterfly seascape tropic