"We had a shark incident this morning with a recreational surfer. Due to that we are putting our event on hold indefinitely," he said.
"Out thoughts and prayers are with this victim."
The men's Billabong Pipe Masters was still set to go ahead in Oahu.
Path to the semis
Wright had earned her way in to the semifinal after scoring a perfect 10 in the first quarterfinal heat against fellow Aussie and seven-time world champ Steph Gilmore.
After two years off due to illness, Wright, 26, only returned to surfing last year and is already showing the skill that won her two world titles.
Wright has also taken to the surf wearing a specially designed jersey that included a Pride flag and Australian flag stitched into the rash vest.
Before the event Wright, who came out as bisexual last year, made a heartfelt post on Instagram declaring her reasons for making the flag statement.
"Today for me feels like another step in my realisation of my true and authentic self," she wrote.
"As a proud bisexual woman of the LGBTQ+ community as well as an Australian, I'm delighted to be able to represent both this year on my competition jersey."