The Caspian Sea is technically a lake despite its name.
Caspian Sea at a glance
- Surface area: about 371,000 km² (143,000 sq mi)
- Length: about 1,200 km (750 mi)
- Maximum width: about 320 km (200 mi)
- Borders Russia, Kazakhstan, Turkmenistan, Iran, and Azerbaijan.
To put that size in perspective:
- It’s roughly the size of Japan.
- It’s larger than the U.S. state of Montana.
- It contains about 44% of all the world’s lake water by volume.