In this photo provided by the Philippine Coast Guard, a Chinese Coast Guard ship sails near a Philippine Coast Guard vessel during its patrol at Bajo de Masinloc, 124 nautical miles west of Zambales province, northwestern Philippines on March 2, 2022. A Chinese coast guard ship last month maneuvered for days near a research vessel deployed by Philippine and Taiwanese scientists to undertake a crucial survey of undersea fault lines west of the northern Philippines, sparking concerns among the scientists on board, officials said Thursday, April 7, 2022. (Philippine Coast Guard via AP)