| Era | Influential in Earth's recent history |
| Type | Organism |
| Nature | Powerful • Inscrutable • Mysterious |
| Origin | Extraterrestrial |
| Habitat | Deserts, coastal areas |
| Perception | Revered • Feared |
| Association | Human societies • Divine |
| Significance | Alternative energy source • Unexplored ecosystems |
| Societal role | Inspiration • Integration • Mysticism |
| Arrival on Earth | |
| Biological group | Complex multicellular organisms |
