NEW YORK (CBSNewYork) — Dozens of people took a dip in the freezing cold water in Breezy Point on Saturday, all for a good cause.

The 20th Annual Rockaway Plunge raised money for cystic fibrosis, but this year’s dive took on a special meaning.

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Cystic Fibrosis: In Breezy Point, A Plunge And A Remembrance For Annie McMahon

Many took the plunge with a heavy heart.

The plunge’s number one sponsor, Annie McMahon, died in July at the age of 22.

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McMahon battled the illness for years with a courage that was an inspiration to so many others fighting the fight.

Watch: Annie McMahon Remembered, Helped Fight Cystic Fibrosis

But McMahon’s spirit was alive and well among the many who had the guts to jump in, including CBS2’s Dick Brennan, who made his 14th plunge along with a hearty crowd that was all in for a good cause.

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