Bluebulb Projects' The Measure of Things presents:
13 is about one-six-hundred-fiftieth the number of Blue Whales in the World.
In other words, the count of Blue Whales in the World is 670 times that amount.
(Balaenoptera musculus) (2002 estimates)
The worldwide population of blue whales (as of 2002) is estimated to be between 5,000 and 12,000. An estimated 378,200 blue whales were killed during the height of whaling in the late nineteenth and early twentieth centures