Spratly Islands Philippines Second Thomas Shoal Scarborough Shoal Territorial Disputes East China Sea Taiwan West Philippine Sea Disputed Waters Territorial Claims Hainan Province Disputed Territories China's Claims Nine-Dash Line Disputed Claims Maritime Disputes Arctic sea floor Maritime Claims Exclusive Economic Zones California Waters Philippines EEZ Pacific Ocean Ayungin Shoal Philippine Island Southeast Asia Philippines' Territorial Waters Islands and Shoals Shoals Luzon Island Taiwan Strait Exclusive Economic Zone Philippines' Claim Asia-Pacific Region Underwater Exploration Undersea Continental Shelf Palawan Province Vietnam Philippine Exclusive Economic Zone