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Baby shark fluctuations that are familiar to the ears are creating a global craze since Gangnam Style.

A baby shark shakes on the major league baseball field in the United States, and a sergeant Kim Soo-hyun delivers it in Washington.

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Washington Nationals outfielder Herardo Parra appears at the plate and familiar music resonates in the field.

Fans cheer with shark applause as they make exquisite hits.

Baby Sharks have become a team's core supporter since June.

Since the poor Para has changed the song with his child's favorite nursery rhyme, he and his team have been on the rise.

[Gerardo Para / Washington Nationals Outfielder: Baby Sharks bring good energy to everyone. I'm so happy.]

The baby shark rang after the postseason decision, and even before the third round of the World Series, it was all baby sharks, from music pieces to people's hats, costumes and tools.

[Mary Lewis / Washington Nationals Fan: 'Baby Sharks' were so easy to remember that they were easy to accept. The song is really fun.]

In Washington, baby sharks have become a symbol of victory and luck beyond just cheering.

A domestic company that made baby sharks has been performing in 100 cities in North America since last June.

Baby sharks are so popular that they are called to soothe surprised babies even when anti-government protests take place in Lebanon.

The baby shark YouTube hit 3.7 billion times of PSY Gangnam style, ranking 5th in YouTube history.

(Video coverage: Oh Jung-sik, Video editing: Jang Hyun-ki)