China is building artificial islands on coral reefs in the South China Sea . three have been built in the coral Islands - with two more in development . The latest island is a huge 1.5 square miles ( four square kilometers ) in size . But ##ey # MailOnline the island could be hugely damaging .
China is building artificial islands on coral reefs in the South China Sea . Five have been built in the Spratly Islands - with two more in development . The latest island is a huge 1.5 square miles ( four square km ) in size . But experts told MailOnline the activities could be hugely damaging .