Lots of water birds are predators. I've been fortunate to photograph Grebes, Coots, and Mergansers over the winter as they were catching fish. None of them can do it quite like the Great Blue Heron, though. And, yes, I've posted lots of photos of herons catching fish, but I never cease to be impressed, especially when they take on something sizable.
1/640 sec. f/8 ISO 250
Linking to Wild Bird Wednesday