A diver dressed in a Santa Claus costume performs with sardines at the Coex Aquarium in Seoul, South Korea, Wednesday, December 9, 2015. (Photo by Ahn Young-joon/AP Photo)





A woman takes selfie in front of a school of fish at the Coex Aquarium in Seoul, South Korea, December 9, 2015. (Photo by Kim Hong-Ji/Reuters)





A diver dressed in a Santa Claus costume makes heart-shape with bubbles as he swims with sardines during a promotional event for the Christmas “Sardines Feeding Show with Santa Claus” at the Coex Aquarium in Seoul, South Korea, December 9, 2015. (Photo by Kim Hong-Ji/Reuters)





A diver dressed in a Santa Claus costume poses for photographs behind girls as he swims with sardines during a promotional event for the Christmas “Sardines Feeding Show with Santa Claus” at the Coex Aquarium in Seoul, South Korea, December 9, 2015. (Photo by Kim Hong-Ji/Reuters)





A diver dressed in a Santa Claus costume swims with sardines during a promotional event for Christmas “Sardines Feeding Show with Santa Claus” at the Coex Aquarium in Seoul, South Korea, December 9, 2015. (Photo by Kim Hong-Ji/Reuters)





A diver dressed in a Santa Claus costume swims with sardines during a promotional event for Christmas “Sardines Feeding Show with Santa Claus” at the Coex Aquarium in Seoul, South Korea, December 9, 2015. (Photo by Kim Hong-Ji/Reuters)





A diver dressed in a Santa Claus costume performs with sardines at the Coex Aquarium in Seoul, South Korea, Wednesday, December 9, 2015. (Photo by Ahn Young-joon/AP Photo)