| The conditions at Champagne Pool are ideal for thermophilic, mildly acidophilic archaeans such as the Sulfobales and Thermoproteales. |
| Like bacteria, archaeans have no internal membranes and their DNA exists as a single loop called a plasmid. |
| Such conditions, while toxic to plants and animals, can be quite cozy for archaeans. |
| The molecular sequence data that underlie the three domains, based on a few ribosomal genes, find that archaeans are more closely related to eukaryotes than to bacteria. |
| Each pool has slightly different mineral content, temperature, salinity, etc., so different pools may contain different communities of archaeans and other microbes. |
