The ones in my watering cans and other containers drown if stuck in the water for too long. I have a large tub catching the overflow from one of my water butts and from time to time I take the cover off and see handfuls of drowned snails.
I’m not sure why aquatic snails would need to crawl on the under surface of the water using water tension. They’d just do whatever passes for snail swimming, wouldn’t they?
In the first video in the post it looked like a common or garden snail that swum to the piece of greenery and used it to get its head out of the water.
ETA - ah - just saw your ETA. 
