In which subject did Prince William get his degree at the University of St Andrews?

Prince William, Duke of Cambridge (William Arthur Philip Louis; born 21 June 1982) is a member of the British royal family. He is the elder son of Charles, Prince of Wales, and Diana, Princess of Wales. Since birth, he has been second in the line of succession to the British throne.

Born in St Mary's Hospital, London, William was educated at Wetherby School, Ludgrove School and Eton College. He spent parts of his gap year in Belize and Chile.

In 2001, William enrolled at the University of St Andrews. He embarked on a degree course in Art History, later changing his main subject to Geography. William wrote his dissertation on the coral reefs of Rodrigues in the Indian Ocean and graduated with Scottish Master of Arts degree with upper second class honours in 2005. While at university, he represented the Scottish national universities water polo team at the Celtic Nations tournament in 2004.