Embark on a nature adventure on day 5 by visiting Nui Chua National Park, which is located just a short drive from Ca Na Beach. This protected area is home to diverse flora and fauna, including rare species of plants and animals. Explore the park's hiking trails, which lead to stunning viewpoints overlooking the coastline. Keep an eye out for wildlife such as macaques, deer, and various bird species. Enjoy a picnic amidst nature before heading back to Ca Na Beach.