The green sea turtle named Omsin, “piggy bank” in Thai, had been finding it hard to swim normally after swallowing 5 kg (11 lb) of coins thrown into her pool for good luck.

Omsin underwent a seven-hour-long operation earlier this month, but concerns rose among Thais after she was rushed to an intensive care unit on Sunday night.

“She is in a coma and breathes very slowly,” one of the veterinarians taking care of Omsin said.

“There’s a chance of survival if she can make it through tonight.”

Nantarika Chansue, of Chulalongkorn University’s veterinary science faculty, urged people to pray for Omsin in a Facebook post on Monday.