Zoa are a fully aquatic, pit-dwelling crustaceanoid indigenous to the subterranean lakes of Maridia, one of the planet Zebes' many sectors. Blue-hued, exoskeletal, back-swimming organisms, they typically can be found living in large colonies within sand traps. Like many other Zebesian hive-oriented fauna, they will protect their homes with ample ferocity, however, Zoa often attack in groups of three, for unknown reasons. They will continue to bombard their foes with their seemingly endless numbers until the threat flees.
- Super Metroid (First appearance)