The area south of Playa Dominical is still characterised by luxuriant primary forest. It is sparsely populated and (until recently) access was difficult. There are a number of attractive forest-backed beachess here. Those further south at Uvita and Playa Tortuga are more secluded and situated close to Ballena National Park, a good area for snorkelling, birdwatching and whale-watching (in season). There are strong breaks at Dominical, making it popular with surfers, but swimming is not recommended
The Golfo Dulce separates the wild Osa Peninsula from the mainland. The Osa Peninsula is a real gem. Mostly undeveloped and natural, fully half of it is protected by Corcovado National Park, which contains significant tracts of undisturbed primary lowland rainforest. The tally of wildlife in Corcovado National Park is impressive with over 400 species of birds, many amphibians, and a strong representation of mammals including 6 species of cat.
Isla del Caño
Cano Island is a small island not far off shore, which is accessible by boat on day-trips. The island has some simple archaeological sites. Dolphins are often seen on the boat trip to the island. These waters are a major breeding ground for humpback whales, which can be seen most often in December and January.
Isla de Coco
Way out into the Pacific is Isla del Coco, a remote island that rises very sharply from the depths of the ocean floor. The island itself is a national park and is closed to most visitors, but the waters surrounding it are fabulous for diving.