Half Moon Shoal

Half Moon Shoal, also known as Bànyuè Jiāo and Hasa Hasa Shoal (Buhanginan ng Hasa Hasa), is an atoll at the eastern edge of the Spratly Islands of the South China Sea. China, the Philippines, Taiwan (ROC) and Vietnam have competing claims over the atoll. It is located close to Northeast Investigator Shoal and 100 km from Palawan, Philippines.

Notable incidents
The Chinese frigate Dongguan accidentally ran aground on the shoal during a routine patrol mission on 11 July 2012. It was later towed away by a Chinese salvage ship.

On 6 May 2014, Philippine police arrested 11 Chinese fishermen allegedly poaching sea turtles on board the fishing boat, Qiongqionghai, near the Half Moon Shoal.

On 29 August 2018, BRP Gregorio del Pillar ran aground at the shoal.