Theater of the Sea, Islamorada

Sprawling across more than 17 acres, this tropical marine mammal facility has been in the Keys for many years, showing the underwater world to curious travelers. Shows focus on conservation, natural history and all the details of marine mammals, particularly dolphins, and you can swim with those friendly creatures. You can also tour the seas aboard a glass-bottom boat or go on a four-hour cruise for a look at marine life in its own environment. Prices for the swim programs range from $50-$155, while admission to the facility is $23.95 (ages 13 and above) and $15.95 (ages 3-12). Children of 2 years and below are admitted free.