In general, coastal aquaculture projects established within the circumtropical zones between 35°N latitude and 35°S latitude have either been built out of mangroves, were previous mangrove site, or areas that developed into mangroves. Available statistics which are rough estimates and likely to be incomplete show that about Vi of the world area now devoted to aquaculture or about one million ha (Table 1) producing about one million metric tons of fishery products annually are at present being derived from these projects. These consist of various species of finfish, crustaceans, mollusks and seaweeds. Some of the more prominent species include: Chanos chanos (milkfish), Mugil cephalus (mullet), Siganus spp. (rabbit fish), hates calcartfer (sea bass), Epinephelus spp. (groupers), Oxyeleotris marmoratus (marble goby), Tilapia spp., Penaeus spp. (shrimps), Scylla serrata (mangrove crab), Crassostrea spp. (oysters), Meretrix spp. (clams), Anadara granosa (cockles), Mytilus spp. (mussels), and Porphyra sp., Undaria sp., Gracilaria sp. and Eucheuma spp., (seaweeds). These various species are raised in impoundments or ponds, net enclosures or cages, and/or managed open spaces of tidal flats.