Pro surfer Soli Bailey has described the moment a dolphin dropped in on his wave as being the best of his surfing career.

The 19-year-old was riding waves off the Yorke Peninsula in South Australia when the mammal jumped through the wave narrowly missing his board.

The surfer was on a trip with his friends when he managed to share the wave with the dolphin.

The dolphin appeared with with Bailey for a few seconds before it disappeared back under to safety.

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Bailey managed to stay on his board and continue his ride after the close encounter.

"Sharing a moment with the oceans finest... what an experience," Bailey said on Instagram.

Sharing a moment with one of the oceans finest go to @mysurftv to watch the clip! 🐬

A post shared by SOLI BAILEY (@solibailey) on