Shrimp world is a self contained and self sustaining semi enclosed ecosystem the shrimp world kit includes marine shrimp algae micro organisms and biosticks the little shrimps can live two to three years or longer inside shrimp world assembly of shrimp world is easy with this amazing kit and 05 litres of bottled water the kit can even be transported on a plane because it has less than 100ml of liquid and contains no harmful bacteria