Nocturnal opossumChironectes minimus found in tropical South and Central America. It is about 33 cm/1.1 ft long, with a 40 cm/1.3 ft tail. It has webbed hind feet and thick fur, and is the only aquatic marsupial. The female has a watertight pouch.
The stars represent the states of Pohnpei, Kosrae, Yap, and Chuuk. The blue field is said to represent the Pacific Ocean. Effective date: 30 November 1978.