Class O planets are extremely similar to the specifications of Class M planets, but are differentiated by the surface of the planet being over 80% covered with liquid water. A "water-world", in essence, Class O planets generally have mostly aquatic lifeforms.
List of Class O Planets[]
The following is a list of Class O planets that have pages within the Lexicon database.
References[]
- Wikipedia, "Star Trek planetary classifications" (Other classes) [1]