Oh dear. It feels like a giant wave coming in, which isn't the worst thing but is certainly not conducive to the current situation. Aziraphale reaches up and tries to shield the water around anyone else in it; he doesn't need to breathe so he doesn't mind being caught up in the drag, but he wouldn't want anyone else to get in trouble so soon after avoiding it.

It seems that they've avoided issue for the most part, which is a relief. Aziraphale wouldn't be the one admonishing anyone with good intentions soon, anyway, even if problems did come to pass.

Still, he wades on over, hoping to help him retrieve some of their lost treasures. "I'll carry it ashore!"