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The previous record belonged to a 42-metre-deep swimming pool in Italy. The new 'Deepspot' pool in Poland won't hold the record for very long, either.
Police have warned demonstrators that gatherings are banned under pandemic-era regulations.
"We must defend Polish churches, we must defend them at every price," Jaroslaw Kaczynski said, drawing condemnation from the opposition who accused him of "inciting civil war."
Since the populist party, Law and Justice, won power in 2015, it has taken control of almost all state institutions, except the Human Rights Commissioner's office but that could soon change.
The 27-year-old clocked 1 hour, 5 minutes and 16 seconds.
In a political climate where anti-LGBT rhetoric is becoming ever more shrill, LGBT people and rights activists are turning to civil disobedience as their last resort to have their voice heard.
The Polish government responded to the letter saying that while they respected the human rights of LGBT people, marriage was between a man and a woman.
The sculpture, titled "Poisoned Source", shows the Polish pope holding a meteorite high over a pool of red water representing blood.
Dissent by the small United Poland party prompted its larger partner Law and Justice (PiS) to warn that the ruling coalition was crumbling.