The term CRUSTACEAN WITH 14 LEGS can be summarized as an Isopod, which is a type of crustacean that has six legs. Isopods are small, aquatic creatures that are found in both saltwater and freshwater environments. They are typically oval-shaped and have two sets of antennae. Isopods are scavengers and feed on decaying organic matter. They are also known for their ability to survive in extreme conditions, such as low oxygen levels and high temperatures.