While the importance of “navigable waters” in federal law is well documented, the term’s significance at the state level is less understood. This Article explores the origins and implications of navigability in Florida. Along the way, readers are introduced to the related concepts of riparian rights, sovereign submerged lands, and the public trust doctrine. Receiving special attention is the significance—or lack thereof—of historic tidelands. The ramifications of the Butler Act for riparian owners are also expounded on. Finally, the efficacy of so-called “swamp deeds” to convey sovereign submerged lands is clarified once and for all. By the end of the Article, readers will grasp how the lands underlying navigable waters can fall into private ownership; however, readers will also be left wondering what public rights remain in such waters. The author poses this and several other questions pertaining to navigability for further examination.