A section of a water slide broke on Royal Caribbean’s Icon of the Seas and injured a passenger Thursday, according to the cruise line.

“Our team provided medical care to an adult guest when acrylic glass broke off a water slide as the guest passed through the slide,” according to a Royal Caribbean Group spokesperson. “The guest is being treated for his injuries. The water slide is closed for the remainder of the sailing pending an investigation.”

The vessel that became the world’s largest cruise ship when it debuted in 2024 sails seven-night Caribbean itineraries out of Miami. A sister ship named Star of the Seas, which features the same six-slide water park, is set to debut this month out of Port Canaveral.

Part of the Category 6 water park, the slide in question is called the Frightening Bolt, which sends riders through a tube with a translucent section near the top. Riders are dropped through a bomb-bay door apparatus into the 46-foot-tall slide, which is touted as the tallest in the industry.

Icon of the Seas. Water slide breaks #iconoftheseas pic.twitter.com/AfCDSbjQlg

— Jim Muldoon (@jimmuldoon) August 7, 2025

Video posted to social media shows the aftermath with water spilling through the broken section of the slide.

In one video posted to X by user @jimmuldoon, the calamity of the moments after the incident could be heard with some people asking if a rider fell through or not. The rider did not fall through, but did suffer injuries passing through the section.