different types of underwater coral reef colonies - poritidae - abstract marine life background - andaman nicobar islands

abstract activity andaman anthozoa aqua aquatic aqueous background beach biodiversity building cnidaria colonies colony coral corallites corals different diving ecology ecosystem exoskeleton fauna flora fringing hard havelock hermatypic hydrocoral india invertebrates island islands life marine natural nature neil nicobar ocean oceanography porites poritidae porous punctata reef rock rocks rocky science scleractinia scuba sea seawater skeleton snorkeling spheroid sports stone stones stony stylaraea subaquatic subaqueous submarine thick tourism travel types under underwater variety various walk water