A diver dressed in a Santa Claus costume feeds fish at the Sunshine Aquarium in Tokyo December 9, 2014. (Photo by Toru Hanai/Reuters)

A diver dressed in a Santa Claus costume feeds fish at the Sunshine Aquarium in Tokyo December 9, 2014. The Santa Claus attraction will be held until Christmas Day. (Photo by Toru Hanai/Reuters)

California Academy of Sciences assistant dive safety officer Mark Lane wears a Santa Claus costume as he dives in the Academy's Philippine Coral Reef tank on December 17, 2014 in San Francisco, California. The California Academy of Sciences Coral Reef Dive program featured a special appearance by Scuba Santa as part of a holiday program. (Photo by Justin Sullivan/Getty Images)

A diver dressed in a Santa Claus costume swims with fish at the Sunshine Aquarium in Tokyo December 9, 2014. (Photo by Toru Hanai/Reuters)

A diver dressed in a Santa Claus costume swims with fish at the Sunshine Aquarium in Tokyo December 9, 2014. (Photo by Toru Hanai/Reuters)

Two divers place a christmas sign inside an aquarium as sharks pass at Madrid's Zoo on December 11, 2014. (Photo by Javier Soriano/AFP Photo)

Visitors wave to a woman dressed as a mermaid wearing a Santa Claus cap as she performs from inside a tank at the Sao Paulo Aquarium December 17, 2014. According to organizers, the performance aims to narrate about the myth and legend of mermaids. (Photo by Paulo Whitaker/Reuters)

A man dressed as a Santa Claus waves underwater as he poses with king penguins at the Marineland animal park in Antibes, December 19, 2014. (Photo by Eric Gaillard/Reuters)

A king penguin looks over at a man dressed as Santa Claus who wears a scuba mask as he poses in their tank at the Marineland animal park in Antibes, December 19, 2014. (Photo by Eric Gaillard/Reuters)

Water distorts the body of a man dressed as Santa Claus poses in a tank with king penguins at Marineland animal park in Antibes, December 19, 2014. (Photo by Eric Gaillard/Reuters)

King penguins stand on the edge of their tank as a man dressed as Santa Claus waves from the water at the Marineland animal park in Antibes, December 19, 2014. (Photo by Eric Gaillard/Reuters)

A man dressed as a Santa Claus sits on the bottom of a water tank as he poses with king penguins at Marineland animal park in Antibes, December 19, 2014. (Photo by Eric Gaillard/Reuters)

A diver looks at a Christmas tree in the Adriatic sea in Selce, south Croatia, December 20, 2014. (Photo by Antonio Bronic/Reuters)

A diver looks at a Christmas tree in the Adriatic sea in Selce, south Croatia, December 20, 2014. (Photo by Antonio Bronic/Reuters)

Divers decorate a Christmas tree in the Adriatic sea in Selce, south Croatia, December 20, 2014. (Photo by Antonio Bronic/Reuters)

Spencer Slate, garbed as Santa Claus, scuba dives in the Florida Keys National Marine Sanctuary, off the coast of Islamorada, Florida, December 19, 2014 in this handout photo provided by the Florida Keys News Bureau December 20, 2014. Each year, Slate dons the costume to provide underwater holiday photo opportunities for his dive shop customers as a fundraiser to sponsor Christmas gifts for a local children's charity. (Photo by Frazier Nivens/Reuters/Florida Keys News Bureau)

A diver in Santa costume feeds fish as part of upcoming Christmas celebrations at Aquaria KLCC underwater park in Kuala Lumpur, Malaysia on Tuesday, December 16, 2014. (Photo by Vincent Thian/AP Photo)

South Korean divers clad in Santa Claus costume swim with sardines at the Coex Aquarium on December 8, 2013 in Seoul, South Korea. Even though the official religion of South Korea is Buddhism, about 30 percent of it is Christian and Christmas is one of the biggest holidays to be celebrated in South Korea. (Photo by Chung Sung-Jun/Getty Images)

Santa Claus feeds the sharks during a visit to the Manly SEA LIFE Sanctuary on December 18, 2013 in Sydney, Australia. (Photo by Lisa Maree Williams/Getty Images)

California Academy of Sciences assistant dive safety officer Mark Lane wears a Santa Claus costume as he dives in the Academy's Philippine Coral Reef tank on December 17, 2014 in San Francisco, California. The California Academy of Sciences Coral Reef Dive program featured a special appearance by Scuba Santa as part of a holiday program. (Photo by Justin Sullivan/Getty Images)

A diver wearing a Santa Claus costume feeds a sunfish to attract visitors at the Hakkeijima Sea Paradise aquarium in Yokohama, suburban Tokyo on December 17, 2014. Christmas attractions will be held till Christmas Day. (Photo by Yoshikazu Tsuno/AFP Photo)