Border Between Ukraine and Crimea
This image shows us the border between Ukraine and Crimea, a peninsula.
Crimea is connected to the mainland of Ukraine by the 5–7 kilometre (3–4 mile) wide Isthmus of Perekop, visible on the left although slightly obscured by clouds.
To the West we can see the Bay of Karkinit in the Black Sea, while the Sea of Azov is visible to the East.
The waters between the Sea of Azov and the Isthmus of Perekop appear more shallow and filled with sediments, making the water a greenish-tan color.
This area is known as the Sivash Sea, or Putrid Sea. It is a salt lagoon, about 1,000 sq mi (2,590 sq km), extending along the northeastern coast of Crimea.
It is separated—except at the Genichesk Strait—from the Sea of Azov by the Arabat Tongue, a narrow sandspit circa 70 mi (110 km) long; the Perekop Isthmus separates it from the Black Sea in the north.
The sea is a complex system of shallow inlets, straits, and sandbars. The water, which has a salt content of up to 20%, has been the source of table salt and of several chemicals, including bromine.