Correction for the size of Seal Island
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How big is 699,000,000 thousands of circular mills?
It's about one-twenty-fifth as big as Seal Island
The size of Seal Island is about 16,000,000,000 thousands of circular mills.
(Western Cape province, South Africa)
Seal Island, named for the tens of thousands of Cape Fur Seals that live there, measures about 16,000,000,000 thousands of circular mills. The large number seals attract great white sharks, who circle the island in a so-called "Ring of Death."