Black Sea
- a tideless almost landlocked sea bounded by Ukraine, Russia, Georgia, Turkey, Bulgaria, and Romania, connected to the Mediterranean through the Bosporus and the Sea of Marmara黑海（内陆海, 无潮汐, 周边为乌克兰、俄罗斯、格鲁吉亚、土耳其、保加利亚及罗马尼亚, 通过博斯普鲁斯海峡和马尔马拉海与地中海相连）。