261311
Contributor
PADI for sure instructs you to. Stay under the shark if it's not a threat, keep sight of it, yada kerblah. If it's aggressive then you exit the water calmly but as quickly as possible. Personally speaking I don't think I'd be partial to charging a shark and bopping it in the nose in its own environment. Compared to me, it's far more powerful and skilled in swimming. Same as I probably wouldn't walk up to a bear on land and give it a good smack to show it who's above it in the food chain.