Groupon deal for an EcoSphere closed aquatic ecosystem ($79 list price). $49 plus $5 shipping. Small sphere is only one left in stock at this point. Each ecosystem contains microorganisms, shrimp, algae, and bacteria The habitats require almost no maintenance, and can survive for up to two years in consistent temperatures and indirect light.Each EcoSphere contains active microorganisms, small shrimp, algae, and bacteria in filtered seawater. Sounds pretty neat!