[Mac Guy]

I mean does it survive quite a few plunges?

First, both the Apple Watch (which some call Series 0) and the Apple Watch Series 1 have the same water resistance— showering and splash are ok. Submerging is not.

Well, it's rated at a waterproofing level of IPX7, which is submerged in 1m of water for 30min. So no plunges, unless you're feeling lucky. Well, are ya... LOL

Many people report that they shower with their Apple Watches, no worries. The same would apply to the Series 1. The Series 2 gets to go from the wading pool to the swimming pool. The deep end and beyond, down to 50M. I don't think I'd take it anywhere near that deep, but a lot of people swim with them.