black sea cucumber - holothuria - on sand under sea water - marine life - andaman nicobar islands, india

actinopyga andaman animal aquaculture aquatic aqueous asia asian atra beach benthopelagic biology black chinese coast coastal collection commercial coral corals creature cucumber cuisine echinoderm echinodermata echinozoa ecology ecosystem elongated endoskeleton exoskeleton fauna fish folk food foreshore gamat harvest holothuria holothurian holothuroidea india indo islands japanese life lolly marine medicinal medicine miliaria neil nicobar nobilis ocean oceanography oceanology pacific rare reef sand scabra science sea seashore shore species stones teat traditional travel trepang trepanging under value walk water