(L-R) Dutch King Willem-Alexander, Dutch Queen Maxima, Danish Crown Princess Mary and Danish Crown Prince Frederik pose for a photo on a ferry boat after visiting the island Samsoe, Denmark, on March 18, 2015. The Dutch royal couple is on two-day state visit in Denmark.  AFP PHOTO / SCANPIX DENMARK / CLAUS BECH +++ DENMARK OUT        (Photo credit should read CLAUS BECH/AFP/Getty Images)