AP Photo/Julie Jacobson
A tropical fish examines Jerry Cowley, aquatic safety manager at the Silverton Hotel-Casino as he interacts with children as an underwater Santa Claus, Dec. 9, 2012, at the casino's aquarium in Las Vegas. On weekends during the Christmas season, Cowley dives dressed as Santa into the 117-gallon aquarium tank for 90 minutes to take Christmas present requests from children using an underwater microphone and to pose for photos.
AP Photo/Julie Jacobson
A stingray glides overhead as Jerry Cowley, aquatic safety manager at the Silverton Hotel-Casino interacts with guests as an underwater Santa Claus, Dec. 9, 2012, at the casino's aquarium in Las Vegas.
AP Photo/Julie Jacobson
A stingray glides up the side of the aquarium wall as Heather Carrasco poses for photos dressed as Santa's helper at the Silverton Hotel-Casino, Dec. 9, 2012, in Las Vegas.
AP Photo/Julie Jacobson
Jerry Cowley, aquatic safety manager at the Silverton Hotel-Casino swims to the surface after interacting with guests as an underwater Santa Claus, Dec. 9, 2012, at the casino's aquarium in Las Vegas.
AP Photo/Julie Jacobson
Jerry Cowley, aquatic safety manager at the Silverton Hotel-Casino interacts with children as an underwater Santa Claus, Dec. 9, 2012, at the casino's aquarium in Las Vegas.
AP Photo/Julie Jacobson
Jerry Cowley, aquatic safety manager at the Silverton Hotel-Casino interacts with children as an underwater Santa Claus, Dec. 9, 2012, at the casino's aquarium in Las Vegas.
AP Photo/Julie Jacobson
Jerry Cowley, aquatic safety manager at the Silverton Hotel-Casino interacts with children as an underwater Santa Claus, Dec. 9, 2012, at the casino's aquarium in Las Vegas.
AP Photo/Ahn Young-joon
Dressed in a Santa Claus outfit, a diver performs with sardines at the Coex Aquarium in Seoul, South Korea, Dec. 11, 2012. Christmas is one of the biggest holidays in South Korea, where over half of the population are Christians.
AP Photo/Ahn Young-joon
Dressed in a Santa Claus outfit, a diver feeds to sardines at the Coex Aquarium in Seoul, South Korea, Dec. 11, 2012.
AP Photo/Ahn Young-joon
Dressed in a Santa Claus outfit, a diver feeds to sardines at the Coex Aquarium in Seoul, South Korea, Dec. 11, 2012.
AP Photo/Ahn Young-joon
Dressed in a Santa Claus outfit, a diver greets a child at the Coex Aquarium in Seoul, South Korea, Dec. 11, 2012.
AP Photo/Ahn Young-joon
Dressed in a Santa Claus outfit, a diver feeds to sardines at the Coex Aquarium in Seoul, South Korea, Dec. 11, 2012.