The term designating the island chain extending southwest from the southern tip of Florida is derived from the Spanish word “cayo,” meaning small island. These land formations are low-lying and predominantly composed of coral and limestone. The term reflects the geographical characteristics of the region.
This naming convention provides a clear and concise identifier for the archipelago. It distinguishes this unique geographical feature from other island chains and coastal areas. Historically, the Spanish influence in the region played a significant role in shaping the nomenclature, which has persisted through centuries of use and remains the accepted designation.