Other forms of life were suitable for living underwater, such as fish and seaweed. Organic life forms were carbon-based, although there were also life forms that were not organic that were silicon-based, such as the Earthors and Dryads.
Despite incredible technical wonders that such life forms had created, atomic war was often a common development in such societies. Nuclear weapons which were capable of destroying civilizations were often developed by some life forms, such as humans and Coluans.
Intelligent life was any life form that was sentient. Mankind was considered a form of intelligent life, as was Kryptonians, Exxorians and many others. Sentient beings like this were usually referred to as people or persons.
As individuals, a person was usually called a character or individual. Although technically, this term could be used to refer to most life forms, whether intelligent or not.
List of life forms
- Species: This is a list of various species, breeds or other types of life forms in the known universe.