underwater small giant - tridacna - live bivalve mollusk among stones - marine life - coral walk, neil island, andaman

abstract among andaman aquarium background biology bioscience bivalve bivalvia boring brown cardiidae coast coastal coral corals crocea crocus diving dweep ecology ecosystem fauna giant gigas green greenish india indian indo island islands laxmanpur life live living marine maxima mollusk mouth natural nature neil nicobar ocean oceanography oceanology open opening organism pacific pearl pearls reef salt saltwater science scuba sea shaheed small snorkeling stones subaquatic subaqueous submarine texture tourism travel tridacna under undersea underwater walk water