The mangrove forests along Sagay's coastline are among the most extensive on Negros Island, and a section of them has been developed into an eco-park with boardwalks and interpretive trails. The mangroves function as a nursery for many of the fish species in the marine reserve, and the connection between the two — mangrove health and reef health — is something the park tries to explain.
The boardwalk trail takes about 45 minutes at a gentle pace. Herons and kingfishers are common, and at low tide you'll see mudskippers and fiddler crabs working the exposed roots. Local guides can be arranged at the park entrance and are worth taking if you want to understand what you're looking at beyond the birds. The park is most pleasant in the early morning before the heat builds.