Dozens of dogs -- and more than 1,000 people -- showed up for the second annual World Dog Surfing Championships Saturday in Pacifica.
Dog surfing is relatively new -- the first competition was in San Diego 12 years ago.
And while the event might seem silly, competitive dog surfing is growing quickly, with contests in Hawaii, Florida, Texas and as far away as Australia.
Dogs compete solo, just dog and board, or tandem, with either a person or with another dog.
The dogs are scored by three judges.
"Number one is stay on the board. And number two is looking happy," explained Sam Stahl, one of the judges. "No one wants to see a dog terrified at the end of a surfboard."
At the event, an Australian Kelpie named Abbie Girl not only stayed on her board but maneuvered it, too.
Michael Uy is her owner. He started surfing with her after he adopted her from a rescue organization. He’d take her to the beach to mellow her out and socialize her.
"One time we put her on a surfboard to rest. And she stood up on the board and we thought, 'Well, why don’t we put her on a wave and see what happens,' and she just rode it all the way into shore," Uy said.
Abbie Girl took home the prize for top dog -- she's now the two-time reigning champion of the event.