From the time of Ponce De Leon and over the 500 hundred years since he stepped on solid ground in the Florida Keys, visitors have come first in expeditions and exploration of a wild, natural group of islands totally dependent on natures blue print of the ebb and flow of tides and hurricanes. In the beginning, it was coconuts and mangroves that caused the ultimate firmament of the Florida Keys. Down through thousands of years, hundreds of varieties of fish, amphibians, mammals and reptiles were the original residents, as well as billions of mosquitos, that for hundreds of years kept people at bay. The evolution of the Keys from Flagler's railroad times, the pineapples plantations, sponging, turtling and commercial fishing has now led to today's, mostly tamed islands. These islands are now strung together for today's tourism boom, by 43 bridges on the Overseas Highway to the Florida Keys.