Chiriqui National Marine Park: Spanning more than 36,000 acres of verdant rainforest, unique wildlife and the Chiriqui Gulf, this National Marine Park is one of the best places to snorkel and hike in the entire country. In the ocean, you'll find humpback whales, whitetip and hammerhead sharks, dolphins, giant manta rays and tropical fish while on land, you'll spot an endless variety of birds (like macaws and toucans) that call the rainforest canopies home. Most ships will offer ways to see and experience the park, whether by snorkeling expeditions or guided hikes. Make sure you pack your camera, as both will offer incredible photography opportunities -- whether it's as you're boating around the Gulf and spotting pods of dolphins or hiking through the rainforest and watching tropical birds soar above. A UNESCO World Heritage Site since 1994, another highlight of the park is the collection of staggering rock formations scattered around the Gulf. A boat ride around will give you an up-close view of these outcrops, and will showcase the small, white sandy islands that also decorate the waters of the park.