Gdansk: the attractive city that makes a great starting point for exploring the Baltic coast. Baltic Sea bao quanh boi cac quoc gia sau day: Sweden, Finland, Russia, Estonia, Latvia, Lithuania, Porland, Norhtern of Germeny, Eastern of Denmark. Baltic Sea noi lien voi North sea boi Kiel Canal o phia Nam va bien White sea boi White sea Canal o phia Bac. Baltic Sea tao thanh do cac kho bang bao mon vao thoi tien su Ice Age va co 1,600 km chieu dai, 193km chieu ngang va trung binh 55m chieu sau. Vao mua dong 45% cua Baltic Sea bi dong bang day khoang 28 inches thuong o phia bac. Co nhieu nam Baltic sea bi dong bang het dac biet vao nhung nam 1987 va 2011. Tu 1720 den nay Baltic Sea bi dong
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