海岸是(shi)(shi)在水(shui)面和陸地(di)(di)(di)接觸處，經波浪、潮(chao)汐、海流等作(zuo)用下形(xing)成的(de)(de)(de)濱(bin)水(shui)地(di)(di)(di)帶，其中(zhong)(zhong)(zhong)(zhong)有(you)眾多沉積物堆積而形(xing)成的(de)(de)(de)岸稱為灘(tan)。 緊鄰海濱(bin)，在海濱(bin)向陸一側(ce)，包括海崖、上升階地(di)(di)(di)、陸側(ce)的(de)(de)(de)低平地(di)(di)(di)帶、沙丘或穩定的(de)(de)(de)植被地(di)(di)(di)帶。指海濱(bin)或濱(bin)海的(de)(de)(de)陸地(di)(di)(di)邊(bian)(bian)界、緊接海洋邊(bian)(bian)緣的(de)(de)(de)陸地(di)(di)(di)。中(zhong)(zhong)(zhong)(zhong)國(guo)最美(mei)的(de)(de)(de)八(ba)大海岸是(shi)(shi)什么(me)？由《中(zhong)(zhong)(zhong)(zhong)國(guo)國(guo)家地(di)(di)(di)理》主辦，全國(guo)34家媒體(ti)協辦的(de)(de)(de)“中(zhong)(zhong)(zhong)(zhong)國(guo)最美(mei)的(de)(de)(de)地(di)(di)(di)方”評(ping)選(xuan)(xuan)活(huo)動，評(ping)選(xuan)(xuan)出中(zhong)(zhong)(zhong)(zhong)國(guo)最美(mei)8大海岸。