A diver in Santa Claus costume swims with fish in a tank during a holiday show at Ripley's Aquarium of Canada in Toronto, Canada, on Dec. 23, 2019. (Photos: Xinhua)

A diver in Santa Claus costume waves to visitors as he swims in a tank during a holiday show at Ripley's Aquarium of Canada in Toronto, Canada, on Dec. 23, 2019.

A diver in Santa Claus costume swims with fish in a tank during a holiday show at Ripley's Aquarium of Canada in Toronto, Canada, on Dec. 23, 2019.

A diver in Santa Claus costume gives a fist bump with a boy as he swims in a tank during a holiday show at Ripley's Aquarium of Canada in Toronto, Canada, on Dec. 23, 2019.

A diver in Santa Claus costume raises his hand for a high five with a girl as he swims in a tank during a holiday show at Ripley's Aquarium of Canada in Toronto, Canada, on Dec. 23, 2019.