East Sea
- Atlantic Ocean
- Baltic Sea
- Baltic Sea
- Dead Sea
- Donghae (disambiguation)
- Donghai (disambiguation)
- Donghai Bridge
- East China Sea
- East Sea (Chinese literature)
- East Sea Campaign
- East Sea Fleet
- Indian Ocean
- Mare Orientale
- Minor places in Arda
- Pacific Ocean
- Sea of Japan
- Sea of Japan naming dispute
- South China Sea
- South Sea (disambiguation)
- Tokai (disambiguation)
- Tunghai (disambiguation)
- West Sea (disambiguation)
- 東海 (disambiguation)