Dolphins drop in on surfer at Margaret River Pro

It wasn't just a shark causing havoc at the Margaret River Pro, with two dolphins joining in on the action as Miguel Pupo was about to catch a wave.

In incredible scenes, the locals burst out of a wave, forcing the Brazilian to pull out of his attempt.

It comes just a day after American Kanoa Igarashi told of a frightening near-miss the evening before the start of the third event on the world tour.

Igarashi said he and a handful of other professionals were surfing Margaret River's famed Mainbreak at sunset when the estimated 4.5m-long great white appeared.

"We were in the water about 10 minutes before dark, which was a really bad idea," Igarashi told Stab Magazine.

"We went over a wave and me and Caio (Ibelli) are looking out and see this fin emerging out of the water - it looked like a submarine - it kept growing," Igarashi told Stab Magazine.

"Then it was flustering and thrashing, making so much water and then it just shot down and I looked over at Caio and he had the most scared face I've ever seen. No one said a word."