Mikey Brennan disappeared from view as wave crashed over him at notoriously dangerous surf spot Shipstern Bluff

A big-wave specialist says he is lucky to be alive after escaping relatively unscathed from a massive wipeout at a notoriously dangerous surf spot in Tasmania.

Mikey Brennan was surfing at Shipstern Bluff, a remote slabbing wave that can only be accessed by a 30km jetski ride or a two-hour hike, when he was gobbled up by the giant waves off the Tasman Peninsula coastline.