underwater star coral reef colonies - astreopora stony corals - abstract marine life background - andaman nicobar islands

abstract acroporidae activity adventure andaman anthozoa aqua aquatic aqueous astreopora background bay beach bengal biodiversity building cnidaria colonial colonies colony coral corallites corals diving ecology ecosystem elephant exoskeleton fauna flora fringing havelock hermatypic india invertebrates island islands laxmanpur life marine montipora natural nature neil nicobar ocean oceanography oceanology porites porous punctata reef rock rocks rocky science scleractinia scuba sea seawater septa skeleton snorkeling sports star stone stones stony stylaraea subaquatic subaqueous submarine tourism travel under underwater walk water