Black Sea which are largely responsible for regional precipitation inputs and influence Mediterranean Sea Surface Temperatures (SST's). The relative strength of these systems also limits the amount of cold air arriving from northern regions during winter. Other influencing factors include the regional topography, as depressions and storms systems arriving from the Mediterranean are funneled through the low land around the Bosphorus, Pontic and Caucasus mountain ranges acting as wave guides, limiting the speed and paths of cyclones passing through the region. There are some islands in the Black sea that belong to Bulgaria, Romania, Turkey, and Ukraine: The Black Sea is connected
Caspian Sea Turkic languages refer to the lake as "Khazar Sea". In Turkmen, the name is , in Azeri, it is , and in modern Turkish, it is . In all these cases, the second word simply means "sea", and the first word refers to the historical Khazars who had a large empire based to the north of the Caspian Sea between the 7th and 10th centuries. An exception is Kazakh, where it is called , "Kaspiy teñizi" (Caspian Sea). Renaissance European maps labelled it as "Abbacuch Sea" (Oronce Fine's 1531 world map), "Mar de Bachu" (Ortellius' 1570 map), or "Mar de