Volunteer diver George Bell, dressed as Santa Claus, waves to children after speaking inside the Philippine Coral Reef tank at The California Academy of Sciences in San Francisco, Thursday, December 13, 2018. The California Academy of Sciences launched its holiday festivities Thursday by having a diver dressed as Santa Claus submerge into a coral reef exhibit while dozens of children watched from behind the glass. (Photo by Jeff Chiu/AP Photo)
