- 福如东海 fúrúdōnghǎi boundless happiness(idiom) may your happiness be as immense as the eastern seas; a common blessing often paired with [[寿比南山|壽比南山|shou4 bi3 nan2 shan1]]
- 东海县 dōnghǎixiàn Donghai CountyDonghai County in [[连云港|連雲港|lian2 yun2 gang3]], Jiangsu province
- 东海大学 dōnghǎidàxué Tunghai UniversityA private university located in Taichung, Taiwan.
- 广东海洋大学 guǎngdōnghǎiyángdàxué Guangdong Ocean UniversityGuangdong Ocean University; a public university in Zhanjiang, Guangdong Province
- 东海舰队 dōnghǎijiànduì East China Sea FleetThe East Sea Fleet of the Chinese People's Liberation Army Navy
- 东海扬尘 dōnghǎiyángchén massive change in the worldLiterally describing the East China Sea turning into dry land and kicking up dust; used to describe the massive and unpredictable changes in human affairs over time.
- 东海大桥 dōnghǎidàqiáo Donghai BridgeDonghai Bridge, a 32.5-kilometer bridge connecting Shanghai to the offshore Yangshan deep-water port
- 东海岸 dōnghǎi'àn east coastthe eastern coast of a country or region
