| 22.965, 9/3/94
|| 1,092 ha
Arenal - Tilarán and Arenal - Huetar Norte Conservation Area, Heredia
It is made up of a group of eight small lagoons that have conserved their biodiversity undisturbed. It is also one of the few habitats that provide protection for West Indian manatees (Trichechus manatus), a highly threatened species throughout Central America. The best way to visit some of these lagoons is by boat along the Tamborcito Channel, which flows into the San Juan river.