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Pictures | Thu Jan 2, 2014 | 7:00pm EST

Polar bear dips

<p>A participant reacts after jumping into a hole cut in the ice on the Ottawa River during the annual Great Canadian Chill polar bear dip in Ottawa, January 1, 2014. REUTERS/Chris Wattie</p>

A participant reacts after jumping into a hole cut in the ice on the Ottawa River during the annual Great Canadian Chill polar bear dip in Ottawa, January 1, 2014. REUTERS/Chris Wattie

A participant reacts after jumping into a hole cut in the ice on the Ottawa River during the annual Great Canadian Chill polar bear dip in Ottawa, January 1, 2014. REUTERS/Chris Wattie

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<p>A man jumps into a hole cut in the ice on the Ottawa River during the annual Great Canadian Chill polar bear dip in Ottawa, January 1, 2014. REUTERS/Chris Wattie</p>

A man jumps into a hole cut in the ice on the Ottawa River during the annual Great Canadian Chill polar bear dip in Ottawa, January 1, 2014. REUTERS/Chris Wattie

A man jumps into a hole cut in the ice on the Ottawa River during the annual Great Canadian Chill polar bear dip in Ottawa, January 1, 2014. REUTERS/Chris Wattie

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<p>People participate in the annual Coney Island Polar Bear Club dip in Brooklyn, New York, January 1, 2014. The Coney Island Polar Bear Club is the oldest winter bathing organization in the U.S. and every New Year's Day holds the winter plunge, which attracts thousands of participants. REUTERS/Allison Joyce</p>

People participate in the annual Coney Island Polar Bear Club dip in Brooklyn, New York, January 1, 2014. The Coney Island Polar Bear Club is the oldest winter bathing organization in the U.S. and every New Year's Day holds the winter plunge, which...more

People participate in the annual Coney Island Polar Bear Club dip in Brooklyn, New York, January 1, 2014. The Coney Island Polar Bear Club is the oldest winter bathing organization in the U.S. and every New Year's Day holds the winter plunge, which attracts thousands of participants. REUTERS/Allison Joyce

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<p>With air temperatures well below freezing, participants in the annual L Street Brownies' Polar Plunge wait to take a swim in the ocean in Boston, January 1, 2014. REUTERS/Brian Snyder</p>

With air temperatures well below freezing, participants in the annual L Street Brownies' Polar Plunge wait to take a swim in the ocean in Boston, January 1, 2014. REUTERS/Brian Snyder

With air temperatures well below freezing, participants in the annual L Street Brownies' Polar Plunge wait to take a swim in the ocean in Boston, January 1, 2014. REUTERS/Brian Snyder

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<p>People participate in the annual Coney Island Polar Bear Club dip in Brooklyn, New York, January 1, 2014.  REUTERS/Allison Joyce</p>

People participate in the annual Coney Island Polar Bear Club dip in Brooklyn, New York, January 1, 2014. REUTERS/Allison Joyce

People participate in the annual Coney Island Polar Bear Club dip in Brooklyn, New York, January 1, 2014. REUTERS/Allison Joyce

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<p>Participants react after entering Lake Washington during the 12th annual Polar Bear Plunge in Seattle, January 1, 2014. Hundreds participated in the chilly New Year's Day tradition, organized by Seattle Parks and Recreation and held at Matthews Beach. REUTERS/David Ryder</p>

Participants react after entering Lake Washington during the 12th annual Polar Bear Plunge in Seattle, January 1, 2014. Hundreds participated in the chilly New Year's Day tradition, organized by Seattle Parks and Recreation and held at Matthews...more

Participants react after entering Lake Washington during the 12th annual Polar Bear Plunge in Seattle, January 1, 2014. Hundreds participated in the chilly New Year's Day tradition, organized by Seattle Parks and Recreation and held at Matthews Beach. REUTERS/David Ryder

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<p>Swimmers participate in the New Year's Day Looney Dook swim at South Queensferry, Scotland, January 1, 2014.  REUTERS/Russell Cheyne</p>

Swimmers participate in the New Year's Day Looney Dook swim at South Queensferry, Scotland, January 1, 2014. REUTERS/Russell Cheyne

Swimmers participate in the New Year's Day Looney Dook swim at South Queensferry, Scotland, January 1, 2014. REUTERS/Russell Cheyne

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<p>A girl pleads to go back to shore after entering Lake Washington during the 12th annual Polar Bear Plunge in Seattle, January 1, 2014. REUTERS/David Ryder</p>

A girl pleads to go back to shore after entering Lake Washington during the 12th annual Polar Bear Plunge in Seattle, January 1, 2014. REUTERS/David Ryder

A girl pleads to go back to shore after entering Lake Washington during the 12th annual Polar Bear Plunge in Seattle, January 1, 2014. REUTERS/David Ryder

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<p>A man reacts after entering Lake Washington during the 12th annual Polar Bear Plunge in Seattle, January 1, 2014.  REUTERS/David Ryder</p>

A man reacts after entering Lake Washington during the 12th annual Polar Bear Plunge in Seattle, January 1, 2014. REUTERS/David Ryder

A man reacts after entering Lake Washington during the 12th annual Polar Bear Plunge in Seattle, January 1, 2014. REUTERS/David Ryder

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<p>People pose next to a polar bear costume worn by two participants in English Bay during the 94th annual New Year's Day Polar Bear Swim in Vancouver, January 1, 2014. REUTERS/Ben Nelms</p>

People pose next to a polar bear costume worn by two participants in English Bay during the 94th annual New Year's Day Polar Bear Swim in Vancouver, January 1, 2014. REUTERS/Ben Nelms

People pose next to a polar bear costume worn by two participants in English Bay during the 94th annual New Year's Day Polar Bear Swim in Vancouver, January 1, 2014. REUTERS/Ben Nelms

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<p>Costumed participants run into English Bay during the 94th annual New Year's Day Polar Bear Swim in Vancouver, January 1, 2014. REUTERS/Ben Nelms</p>

Costumed participants run into English Bay during the 94th annual New Year's Day Polar Bear Swim in Vancouver, January 1, 2014. REUTERS/Ben Nelms

Costumed participants run into English Bay during the 94th annual New Year's Day Polar Bear Swim in Vancouver, January 1, 2014. REUTERS/Ben Nelms

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<p>A woman wearing a wedding dress prepares to run into English Bay during the 94th annual New Year's Day Polar Bear Swim in Vancouver, January 1, 2014. REUTERS/Ben Nelms</p>

A woman wearing a wedding dress prepares to run into English Bay during the 94th annual New Year's Day Polar Bear Swim in Vancouver, January 1, 2014. REUTERS/Ben Nelms

A woman wearing a wedding dress prepares to run into English Bay during the 94th annual New Year's Day Polar Bear Swim in Vancouver, January 1, 2014. REUTERS/Ben Nelms

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<p>Participants prepare to run into English Bay during the 94th annual New Year's Day Polar Bear Swim in Vancouver, January 1, 2014. REUTERS/Ben Nelms</p>

Participants prepare to run into English Bay during the 94th annual New Year's Day Polar Bear Swim in Vancouver, January 1, 2014. REUTERS/Ben Nelms

Participants prepare to run into English Bay during the 94th annual New Year's Day Polar Bear Swim in Vancouver, January 1, 2014. REUTERS/Ben Nelms

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<p>People participate in the annual Coney Island Polar Bear Club dip in Brooklyn, New York, January 1, 2014. REUTERS/Allison Joyce</p>

People participate in the annual Coney Island Polar Bear Club dip in Brooklyn, New York, January 1, 2014. REUTERS/Allison Joyce

People participate in the annual Coney Island Polar Bear Club dip in Brooklyn, New York, January 1, 2014. REUTERS/Allison Joyce

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