Lichen is a plant that appears in many areas of the Tallon Overworld in Metroid Prime, often covering entire surfaces in rooms. There are two variations of lichen that exist. The first is a blue-green plant appearing the most often, while the second grows on stone placed on a Half-pipe in the Tallon Canyon.
- Tallon Canyon
- "The stone surface this lichen grows on appears too smooth to be natural."
- "This lichen appears to be giving off low levels of radiation. No matches found in flora and fauna databank."
- "Cannot identify light source. No profile matches in standard flora and fauna databank."