and the availability of fish. But Mike Fitz, a former Katmai park ranger and currently a resident naturalist for explore.org, has a pretty good idea. SEE ALSO: Fat Bear Week is back and it's the ...

Oily fish such as salmon, tuna, sardines, mackerel, and trout are full of omega-3 fatty acids -- good fats unlike the bad saturated fat you find in most meats. These fish should be a staple of ...