Video shows strange 'thing' swimming in Alaska river

Credit: DaytonDailyNews

Caption
WATCH: "Ice Monster" or Frazil Ice?

Credit: DaytonDailyNews

A video captured in Fairbanks, Alaska, shows a strange “thing” swimming in the Chena River.

The video was filmed by Fairbanks employees of the federal Bureau of Land Management.

Chena River Ice Monster

#WildWednesday Our Fairbanks employees captured this strange "thing" swimming in the Chena River in Fairbanks, #Alaska. Video by Craig McCaa and Ryan Delaney (BLM)

Posted by Bureau of Land Management - Alaska on Wednesday, October 26, 2016
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Officials with the bureau shared what they felt was the most compelling explanation of the video so far, hypothesized by experts with the Alaska Department of Fish and Game.

MYSTERY SOLVED....?
It's a quiet #Halloween morning in front of the BLM office on the Chena River in Fairbanks. We've...

Posted by Bureau of Land Management - Alaska on Monday, October 31, 2016

They suggest that the video shows “frazil ice stuck to a rope that is probably caught on a bridge pier.”

Frazil crystals form in calm waters, becoming a smooth and thin form of ice, according to the National Snow and Ice Data Center. The center says frazil ice is sometimes referred to as grease ice for its resemblance to an oil slick.