Archipelago
| Basic: |
| An archipelago is a type of group of islands that is also a group of things that has between 2 and 1000 members and natural thing. |
| Documentation: |
| Comment: A specialization of IslandRegion . Each instance of #$Archipelago is a group of many islands that form a geographical cluster. Examples include Ionia, InnerHebrides-Archipelago, SocietyIslands-FrenchPolynesia, and ChannelIslands. |
| Structure: |
| Some island is in every archipelago. |