Ok so the "waterproof" requirement is going to remove DSLR's from your shopping list.
Unfortunately doing so also going to remove the best cameras as well.
You can't have both!

I guess it comes down to what you want, image quality wise, out of your camera, and how keen a photographer you are.

There are several waterproof models out there. They are all compact-type cameras with built-in zoom (you cant change lenses).
They're ideal for your fishing snapshots. They won't be taking cover photos for magazines though.
With careful use and a bit of photographic knowledge you can get good shots from them.

If you want to consistently get magazine quality shots (this also requires skill) forget the waterproof bit and buy a good DSLR.

Have a look at Mark's and Chad's photos. They both use DSLR cameras (and know how to use them).

http://www.dpreview.com/products/canon/compacts/canon_d10

http://www.dpreview.com/news/2013/01/29/Nikon

http://www.dpreview.com/news/2013/01/29/Pentax-to-ship-more-affordable-WG-10-waterproof-camera

http://www.dpreview.com/news/2013/01/29/Pentax-launches-WG-3-and-WG-3-GPS-rugged-waterproof-cameras-with-faster-lens