A number of local tour providers offer morning snorkeling trips, during which you can descend into the waters off Key West and swim over the living coral reef environment, home to sea turtles, rays, and fish of all kinds and colors. Typically, expert guides will help you get the knack of snorkeling, as well as explain the sea life you see.
Nearby Key Marathon is known as the home of deep sea fishing, offering guided charter excursions. Sporting fish such as sailfish, wahoo, mahi mahi, tuna, snapper, grouper, king mackerel, and shark may find themselves landed in the boat with your patience and effort.
The island of Key West is only four miles long by two miles wide. When you go parasailing, you can see the entirety it from the air. A one hour experience is offered by several local companies. Catch the fresh ocean breezes, and keep an eye out for dolphins playing in the water.