"Inside Punta Cana’s Indigenous Eyes Ecological Park and Reserve, underground rivers running toward the sea feed 12 crystal-clear freshwater pools, five of which are swimmable. Dive off a wooden platform into the largest one—the 26-foot-deep Guama Lagoon—and you’ll be swimming with turtles and large, black tilapia fish in what was once the private pool of the Taino Indian chief. To the Taino Indians, the lagoons looked like eyes when the sun hit the surface of the water—hence the name “Indigenous Eyes.”"