Premise: Sierpe River (Spanish: "Rio Sierpe") is a river of Costa Rica. Boat traffic is common with both locals and tourists. A broad range of wildlife can be seen from the American Crocodile, various other reptile species, and exotic fish and birds. It joins the Rio Terraba.
Hypothesis: Both the Sierpe River and the Rio Terraba, of Costa Rica, are common with locals and tourists, and feature a broad range of wildlife including exotic fish, birds, and reptiles.