These latter ones, which mostly come from the great ice cap covering Greenland, pose the greatest threat to man, since they may drift into transatlantic shipping lanes. Just how are icebergs produced?
सामान्यतः किसी हिमशैल के पिण्ड का केवल सातवाँ या दसवाँ हिस्सा पानी के ऊपर नज़र आता है ।