These protected areas bring an incredible amount of biodiversity right into the bustling metropolis–including coral reefs.

Railcars once filled with hustling commuters in the city of Atlanta are now 65 feet below the Atlantic Ocean filled with inquisitive fish, sea turtles and coral.

Tiger shark -> Green sea turtle Lurking around the edges of reefs during the day, tiger sharks ( Galeocerdo cuvier ) have evolved as highly aggressive "top" predators that grow at least 25 feet long.

An injured sea turtle is now recovering with the help of Coral World Ocean and Reef Initiative veterinarians. A series of tubes are connected to a hole in the turtle shell to remove fluids from ...

By Jennifer Hauser, CNN (CNN) — Railcars once filled with hustling commuters in the city of Atlanta are now 65 feet below the Atlantic Ocean filled with inquisitive fish, sea turtles and coral ...

Railcars once filled with hustling commuters in the city of Atlanta are now 65 feet below the Atlantic Ocean filled with inquisitive fish, sea turtles and coral.

By Jennifer Hauser, CNN (CNN) — Railcars once filled with hustling commuters in the city of Atlanta are now 65 feet below the Atlantic Ocean filled ...

By Jennifer Hauser, CNN (CNN) — Railcars once filled with hustling commuters in the city of Atlanta are now 65 feet below the Atlantic Ocean filled with inquisitive fish, sea turtles and coral ...

By Jennifer Hauser, CNN (CNN) — Railcars once filled with hustling commuters in the city of Atlanta are now 65 feet below the Atlantic Ocean filled with inquisitive fish, sea turtles and coral ...

Railcars once filled with hustling commuters in the city of Atlanta are now 65 feet below the Atlantic Ocean filled with inquisitive fish, sea turtles and coral.

By Jennifer Hauser, CNN (CNN) — Railcars once filled with hustling commuters in the city of Atlanta are now 65 feet below the Atlantic Ocean filled with inquisitive fish, sea turtles and coral ...