The world's first oceanarium was constructed in 1938, 18 miles south of St. Augustine. This National Register of Historic Places designee, now part of the Georgia Aquarium, has come a long way from marine film studio to theme park to its current iteration as dolphin research, education, and entertainment center. The formal dolphin shows are history, but you can have a far more memorable experience with interactive programs that allow you to swim with and feed the animals or become a dolphin trainer for a day. Programs start at $32.95 a day (for the simple "touch-and-feed" option) and go as high as $475 (for "trainer for a day"). General admission allows you to observe the dolphins through 6-foot-by-10-foot acrylic windows. The 1.3-million-gallon facility is home to 13 dolphins, and until 2014 the park housed Nellie, the longest-lived dolphin in human care until her May 1, 2014 death at the age of 61. A new calf, Coquina, was born shortly after Nellie's death. Other exhibits feature native Florida marine life such as tarpon, sharks, spotted eagle rays, and giant sea turtles, as well as historical artifacts dating back to the park's inception as a nautical movie studio.