well, if you are looking for an inexpensive option, we got a Nikon Coolpix S30. We have other cameras that are not waterproof and honestly I just grabbed this one because it was the only waterproof one at Target and we were leaving for our cruise in less than a week. However...it is now my go to "daily use" camera...I take it everywhere. It takes great pictures on land and in the water. If I want special shots etc..I do use my expensive SLR camera but for normal everyday stuff (and I do take a lot of everyday type of pics- I do this as sort of a journal) I use the Nikon.
The underwater shots we took were amazing...much better quality than I had hoped for. Easy to use and best of all it takes regular double A batteries...no charging (which I love!)
It takes video as well.