System and method for aquaculture of marine life-forms: Live corals make a stunning addition to marine aquariums, but harvesting mature coral from the wild threatens rare reef ecosystems. Coral cultivation or aquaculture could help, especially in the U.S., where hobbyists buy approximately 80 percent of the live coral sold in the world. The challenges to culturing corals include generating the kind of multidirectional, strong currents created by waves and tides, which are necessary for reef organisms to thrive. Karen Spartz, who owns an aquaculture business in Indiana, came up with a solution.