Petsch is terrified of open bodies of water. "I was in a glass-bottomed boat that broke a long time ago, so I've always been kind of freaked out," she told Glamour. "I took a 16-hour trip to Norway on a boat that freaked me out, all of that. When I read the script for that scene in Riverdale, I assumed they'd use a stunt double in the boat. When I got to set, they were like, 'So, we're gonna put you in a wetsuit.' And I was like, 'Excuse me? A what?'"