Syvash
The Syvash or Sivash, also known as the Putrid Sea or Rotten Sea Russian: Гнило́е Мо́ре, Gniloye More; Ukrainian: Гниле́ Мо́ре, Hnyle More; Crimean Tatar: Çürük Deñiz, is a large area of shallow lagoons on the west coast of the Sea of Azov. Wikipedia
Average depth: 0.5–1 m (1.6–3.3 ft)
Area: 988 mi²
Location: Sea of Azov
River sources: Salgir
Salinity: 22-87‰