Although the estuary is wide near the ocean, it extends with narrow fingers into the mangrove swamp. The tour boats travel to the upper reaches of the estuary to let people see the mangrove thickets up close.
They also stop so people can take a hike on some of the trails that lace through this natural habitat.
25% of the area of Costa Rica is set aside in national parks and wildlife refuges, the highest percentage of any country on earth. That is a primary reason, along wit the biodiversity, that ecotourism is the number one industry in the country.
We are showing photos of Bangkok, Thailand on our Viva la Voyage travel photo site this week. We loved it, and we hope you will enjoy our photos.