Foreign intelligence services are using "spy turtles" and "spy fish" to snoop on China, the country's Ministry of State Security said Friday. "An unseen covert war of espionage is currently unfolding" in the seas around China's coast, the ministry wrote in a  post on the WeChat  social media platform.   In recent years, overseas spy agencies have been "continuously collecting and stealing sensitive maritime data through various new types of espionage equipment," it said, including "spy turtles