Explore beautiful tropical beaches on this full day catamaran trip from key west to dry tortugas national park the dry tortugas islands were discovered by ponce de leon in 1513 he sighted more than 100 sea turtles swimming in the seas surrounding the seven islands fort jefferson located on one of the islands was initially designed to serve as a defense for the united states back in 1812 today you can relive the history of these islands and take in their beautiful scenery by voyaging on a