It should remain international waters, for the sake of biodiversity in the atolls, reefs and islands
China is reclaiming large amounts of land by dredging sand over coral reefs and then concreting it in place to build upon. China has so far carried out thousands of acres of land reclamation, despite having no legal basis of claim over any of these coral reefs. It is not just the destruction of habitats in question here, but also pollution and interruption of bird, fish and mammal migration routes, so this processes needs to be stopped.
Scientists such as Frank Muller-Karger, profession of biological oceanography at the University of South Florida, have criticised China’s actions in the South China Sea. He stated that construction on these islands and atolls can wash sediment back into the sea causing blooms which will smother aquatic life in the area. Furthermore heavy metals, oil and other chemical contaminants from both construction and shipping can damage these oases of biodiversity.