Tourism is the business in Treasure Island, because the weather is warm all year. During the winter months, elderly people come from the cooler states to escape the cold weather. The Florida natives call these tourists "Snowbird" or "blue-hairs." Th ese tourists really do earn these unsavory titles because they all drive five miles an hour. This makes the locals crazy. After the snowbirds leave, all of the summer tourists arrive. These are usually families driving mini-vans with ten bratty kids wh o are all out of school for the summer.