If Bali belly, dengue fever and dangerous drinks have not been enough to put you off taking a holiday to Bali - perhaps the story of "spiderman" will.

West Australian man Dylan Thomas may now be joking about whether he'll develop "superpowers" but on the weekend he was experiencing a "searing sensation" as a spider that had made its way into his abdomen through an old appendix scar, crawled underneath his skin, all the way up to his sternum.

The spider resulted in a "searing sensation". Credit:Shanelle Miller

The horrifying incident happened while the Bunbury man, now known as 'spiderman' to his friends, was holidaying on the Indonesian island.

He told Radio 6PR about the experience.