colorful coral reef at the bottom of tropical sea, shoal of schooling bannerfish heniochus diphreutes, underwater landscape

acropora africa animal aquarium aquatic australia bannerfish beauty blue bottom bubbles caribbean coral deep diphreutes diver diving ecosystem egypt environment fauna fish floor hard heniochus indian indonesia landscape life maldives marine nature ocean pacific porites red reef saltwater school sea seascape shoal stony tropical undersea underwater water wild wildlife yellow