LONDON, UNITED KINGDOM - JULY 09: Britain's Prince Charles, Prince of Wales speaks to his son Prince William, Duke of Cambridge as he scuba dives with British Sub-Aqua Club (BSAC) members at a swimming pool on July 9, 2014 in London, England. In May 2014, The Duke of Cambridge followed in the footsteps of The Prince of Wales and The Duke of Edinburgh by becoming President of BSAC, the UKs governing body for scuba diving.  (Photo by Justin Tallis - WPA Pool/Getty Images)