Calusa

The Calusa ( , Calusa: *ka(ra)luś(i)) were a Native American people of Florida's southwest coast. Calusa society developed from that of archaic peoples of the Everglades region. Previous Indigenous cultures had lived in the area for thousands of years.

At the time of European contact in the 16th and 17th centuries, the historic Calusa were the people of the Caloosahatchee culture. They developed a complex culture based on estuarine fisheries rather than agriculture. Their principal city of Calos was probably at Mound Key, and their territory reached at least from Charlotte Harbor to Marco Island. Hernando de Escalante Fontaneda, a Spaniard who was held captive by Florida Indians from 1545 until 1566, described the Calusa realm as extending from Tanpa, at the mouth of Charlotte Harbor, down the coast to Muspa, at the southern end of Marco Island, and inland to Guacata on Lake Mayaimi (Lake Okeechobee). They had the highest population density of South Florida; estimates of total population at the time of European contact range from 10,000 to several times that, but these are speculative.