Not cool!

A giant spinning ice disk in Maine that gained international fame was hacked to pieces by a self-proclaimed scientist from New Jersey who tried to carve it into a peace sign, according to a report.

Christopher Angelo, 44, of Lavallette, NJ, swung a pickax and a hatchet at the 100-yard-long frozen spectacle in Westbrook, prompting locals to call the cops, according to CentralMaine.com.

Angelo — who said he was a biologist, but wasn’t affiliated with a university — also hauled a chainsaw to the site on the Presumpscot River, the paper reported.

He set up underwater cameras and said he planned to take samples and study the counter-clockwise-rotating chunk of ice.

But as he worked, he tumbled into the frigid water, getting drenched up to his waist. Eventually, he got out without help.

Cops got calls about the uncool move but said they couldn’t order him to freeze.

“It isn’t against the law to chop river ice,” said Westbrook police Capt. Sean Lally told the paper. “Unusual? Yes.”

Angelo has been arrested for staging bizarre stunts in recent years, including ones linked to Superstorm Sandy. In 2013, he climbed to the top of a damaged roller coaster in New Jersey and flew an American flag, police said.

The disk formed last week, earning international media attention and sparking theories that it was created by aliens.