Tyuleny Archipelago
The Tyuleniy Archipelago (Kazakh: Түлен аралдары Tülen araldary, Russian: Тюленьи острова), is an island group in the north-eastern Caspian Sea off the Mangyshlak Bay west of the Mangyshlak Peninsula and about 13 kilometres (8.1 miles) northwest of the Tupkaragan Peninsula, 27 kilometres (17 miles) north of Bautino. Perhaps the most substantial group of islands in the Caspian, they were first accurately mapped by Fedor Ivanovich Soimonov who led the 1719 Caspian Expedition, studying the Caspian Sea from 1719 to 1727.