Originally Posted by
CokeandTaco
Key Biscayne http://www.flyertalk.com/forum/17567058-post7.html[/URL]
+1 on the key Biscayne....there is an aquarium there.
across the water in Coral Gables from Key Bisacaine is a tropical botanical gardens
Farther south from there you have Biscayne National Park
http://www.nps.gov/bisc/index.htm
Everglades are to the west of Miami, I am sure there are day tours offered. The only issue there is that you may not be off the boat in time to do one of these.