This is a view of the Caribbean coast at Tortuguero. As I mentioned previously, the coastline is protected as part of the national park in order to provide a nesting site for sea turtles.
My guidebook states that visitation to the Tortuguero area did not really begin until the 1970's, when construction of a canal allowed passage to the area in small boats on inland waterways. Prior the inland water route, it was difficult to reach the area by boat because the sea in this area is rather rough and there is a lack of a natural harbor along the beach, as you can see in this photo.
This photo also illustrates the high humidity of the area. You can see that the mist from the ocean spray lingers in the air. This is a contrast to our coast on the Pacific side of Costa Rica, which has less humidity.