- The Turtle Hospital The Turtle Hospital (Hidden Harbor Marine Environmental Project, Inc.) Marathon, Florida, U.S.A. The Turtle Hospital was opened in 1986 with four main goals: 1) repair injured sea turtles and return them to the wild, 2) educate the public through outreach programs to local schools, 3) conduct and assist with research which aids the sea turtles (in conjunction with state ...www.turtlehospital.org