The archipelago extending southwest from the southern tip of Florida is identified by a specific toponym. This name, composed of two distinct components, reflects both geographical characteristics and historical influence.
The latter half of the designation originates from the Spanish word “cayo,” meaning small island. These formations, composed primarily of fossilized coral and limestone, are scattered throughout the region. The first part of the designation denotes the peninsular state to which these islands are connected. This attribution highlights the geopolitical association and location of the island chain.