Surfer Mick Fanning on His Terrifying Shark Attack: 'By Far the Scariest Thing I've Ever Been Through'

Pro surfers Mick Fanning and Julian Wilson are definitely bonded for life!

When Fanning survived a horrifying shark attack during World Surf League's J-Bay Open in South Africa on Sunday, Wilson started rapidly paddling to his aid. Now, the two Australians have opened up about the experience on Instagram.

"So thankful to be able to have this hug with @julian_wilson, this man came to my aid like a warrior," wrote Fanning. "It was by far the scariest thing I have ever been through and am still rattled."

WATCH: Surfer Mick Fanning Survives a Shark Attack During a Competition in South Africa

"In our sport we always think about sharks and know we are in their domain," he continued. "Many thanks to all the people that have reached out and sent their wishes. Jbay is an incredible place and I will go back one day. Thanks to the @wsl announcers and water patrol for being on top of us and the care they showed us and to all my friends on tour that were by my side. Love you all."

Wilson also posted an emotional message to Instagram, writing, "Love you brother! Today was one of those days you hope you'll never experience in life and to see you stand your ground and fend off that monster. You're my hero mate. So happy I could give you a hug on the boat with all limbs in tact. You're the true definition of living by the sword."

The scary attack was vividly captured on social media, the shark pulling Fanning off of his board, when Fanning said that he punched the creature in the back.

Many online were blown away by Fanning's close call. Lady Gaga tweeted out the video on Monday, writing, "Holy sh*t praise the lord. Wow."

WATCH: Professional Surfer Bethany Hamilton Is Pregnant, Talks Motherhood With One Arm

After the incident , the World Surf League immediately cancelled the event for safety reasons. "We are incredibly grateful that no one was seriously injured today," the organization said in a statement. "Mick's composure and quick acting in the face of a terrifying situation was nothing short of heroic and the rapid response of our Water Safety personnel was commendable -- they are truly world class at what they do."

Another person who has survived a shark encounter is "Soul Surfer" Bethany Hamilton, who lost her arm during a shark attack at age 13. Watch the video below.