Single abalone in shallow water, respiratory holes visible

single abalone respiratory holes sealife farmed perlemoen poaching aquafarm export gastropod south african aquaculture exported species haliotis husbandry invertebrate shellfish seafood sustainable farming endangered species marine snail poaching concern live abalone aerated tank commercial farm marine life haliotidae mollusc asian market south africa live specimens industry fishery haliotis midae delicacy commercial sea snail high market value soughtafter shell animals indigenous herbivore herbivorous production breeding highlyprized