The term "Order Siphonophora" refers to a group of marine organisms that are characterized by their colonial structure. These creatures are made up of individual organisms, called zooids, that are interconnected and function together as one. There are several synonyms for the term "Order Siphonophora," including "colonial hydrozoans," "siphonophores," and "hydrozoan colonies." While these terms may differ slightly in their specific connotations, they all refer to the same general group of organisms. Order Siphonophora can be found in all of the world's oceans and play important roles in marine ecosystems as both predators and prey.