The superintendent of the National Park Nopparat Thara explained that the excavation of Khlong Son did not affect the seagrasses of Ao Thung because of the method of drilling to suck the sand sediments through the pipe and dumping them on the shore.
On April 5, 2022, reporters reported that a group of nature and environmentalists in Krabi province was concerned about the impact on nature and the marine environment of the Khlong Son Trench Dredging Project, Ao Nang Subdistrict, Mueang Krabi District, Hat Nopparat Thara National Park, Phi Phi Islands, Krabi Province, causing sediments to be carried by currents to Ao Thung, located about 3 kilometers away, which is a source of seagrasses with colorful stars, corals, sea cucumbers, various aquatic animals in large numbers. They are calling on relevant agencies to investigate.
Mr. Teekhawut Sriburin, head of Hat Nopparat Thara National Park, Phi Phi Islands, Krabi province, said that the Khlong Son dredging project is a project of Krabi province, with a budget of 27.9 million baht, a distance of 3.5 kilometers, a depth of 2.5 meters, while the water level is lowest, 40 meters wide from the mouth of the gutter to the Lang Bay area. Nopparat Thara Beach National Park Office, Phi Phi Islands, Krabi Province. Being shallow, it has become an obstacle for boat navigation. The approval of the Committee on the Study of Natural and Environmental Impacts at the provincial level has now been granted.
By the method of excavation using a drilling rig with a high power suction nozzle, sand suction through pipes up on the shore causes no sand sediments to spread out from the excavation area; therefore, it does not affect the environment of seagrass resources and corals near the area.
Coined as an unseen spot and a nature supermarket in Krabi, Ao Thung (Thung Bay) is located in Muang District, Krabi, close to National Park Nopparat Thara and home to abundant seagrasses, coral reefs, colorful starfish, and other exotic marine animals on over 100 Rai land. When the tide goes down, tourists and photographers like to take photos. Local people are able to find fresh seafood on the beach.