The Alaska Peninsula brown bear is any member of the grizzly bear (Ursus arctos horribilis) that lives in the coastal regions of southern Alaska. Alaska Peninsula brown bears are a very large brown bear subspecies, usually ranging in weight from 800 to 1,200 pounds (363 to 544 kg). They are found in high densities along the southern Alaskan coast due not only to the large amount of clams and sedge grass but also to the annual salmon runs; this allows them to attain huge sizes, some of the biggest in the world. They may gather in large numbers at feeding sites, such as Brooks Falls and McNeil Falls, both in Katmai National Park near King Salmon.