In 2000, a particularly huge iceberg, B15, broke off the Ross Ice shelf and then itself broke into two halves. One of these, B15a, is 295 km long, 40 km wide, ˝ km deep and has a total area of about 10 000 km˛!
295 km = about 183 miles
40 km = about 25 miles
0.5 km = about 0.3 miles or 1640 feet deep! Visible light can at best penetrate about 600 feet.
10000 sq km = about 4575 sq mi which is about the size of Connecticut! And that's only part of the original iceberg!
