China conducts marine survey east of Taiwan after Japan-Philippines talks

Key facts

• China conducted a marine environmental survey east of Taiwan from Tuesday to Thursday.
• The survey was carried out by the Ministry of Natural Resources' East China Sea Bureau using the Xiangyanghong 22 research vessel.
• Beijing stated the survey aimed to understand ecological conditions in its jurisdictional waters to support conservation.
• The survey follows maritime boundary talks between Japan and the Philippines, which China criticized as illegal.
• China Coast Guard conducted patrols east of Taiwan, calling them a necessary action in response to the Japan-Philippines negotiations.
• Taiwan rejected China's claims and stated its sovereignty must not be infringed upon.

Beijing has detailed a rare marine survey conducted east of Taiwan, a move seen as reinforcing its jurisdictional claims in the area following maritime boundary talks between Japan and the Philippines. The survey, conducted by the Ministry of Natural Resources’ East China Sea Bureau using the Xiangyanghong 22 research vessel, ran from Tuesday to Thursday.

According to a ministry statement, the goal was to "gain a comprehensive understanding of the natural ecological conditions in China’s jurisdictional waters to support marine ecological conservation efforts." While not the first time a research vessel has been dispatched near Taiwan, announcements by mainland authorities regarding such missions are rare. Experts suggest Beijing's efforts aim to thwart perceived military presence in the region by Washington, Tokyo, and Manila.

The survey is part of a broader maritime law enforcement operation coordinated by multiple Chinese agencies. Analysts warn that friction in the region could increase. The China Coast Guard stated that patrols east of Taiwan were a "necessary action" in response to the planned negotiations between Japan and the Philippines, which China deems "completely illegal, null and void" and infringing on its sovereignty.

Taiwan has condemned the patrols and China's assertions, with its coast guard monitoring Chinese vessels. Taiwan's foreign ministry rejected Beijing's position, emphasizing that China has no authority to interfere with Taiwan's territorial sovereignty or maritime rights. The latest move adds to escalating tensions in the western Pacific, with China increasing military and coast guard activities around Taiwan.