The National Park is donation based, which means you can pay nothing to get in. Awesome when you're a budget traveler. The bus ride there and back was about $2.50. When you show up at the entrance to the park, you're on a beautiful beach with a volleyball court, showers, bathrooms, everything you'd need for a nice day at the beach. But that wasn't why I came to Cahuita. I came for the bountiful nature, and boy-oh-boy was I in for a treat!
A friend of mine had told me that she went to the NP with a guide and saw tons of wildlife, and I was not sure if the guide was really necessary to see everything. Luckily I didn't need anything. The weather was perfect and there were all sorts of people on the trail who had paid for guides, whenever I felt like I might be missing something I just looked at the guides to see if there was something that they were pointing out. Every time that I saw the guides pointing though, I would walk over and see that they were pointing at a certain type of tree, or a plant, and I quickly realized that I was spotting more wildlife than the guided tours might be.
Within two minutes on the path, I'd seen more than a dozen lizards, a raccoon, and the famous blue butterflies (whose name I can't remember). By the end of the trip I had seen an ant-eater, howling monkeys, white-headed monkeys (one of which tried to steal my GoPro), an eyelash viper, a sloth, and lots of other beautiful critters that I can't name (one giant black grasshopper with orange antennae).
I didn't capture pictures of everything but here is what I have: