The Shallow Reef (also known as the Coral Reef or Fish Cage Area) is a coral reef covering an area of approximately 1 square kilometer, located on the eastern side of Phu Quy Island, about 300 meters from the coastline of Phu Long Hamlet, Long Hai Commune. The reef features various types of coral such as stony corals, table corals, and cabbage corals, combined with long stretches of green sea grapes and a variety of colorful fish species, creating a stunning and picturesque landscape.