What is found at 50 degrees North latitude and 40 degrees West longitude on the globe?

Lot of water. 50N, 40W is in the northwest Atlantic, almost 600 miles east of the nearest point of land in Canada and more than 1700 miles southwest of London, England.

The location is noteworthy for its mention in Rudyard Kipling's Just So Stories, in the story How the Whale Got His Throat. In the story, a small fish instructs a whale to swim to the location 50N, 40W where it will find a human to eat.