Bering Land Bridge National Preserve is a remnant of the land bridge connecting Asia with North America more than 10,000 years ago. During the ice age. whenever sea level fell enough, this became part of a migration route—up to 1,000 miles wide—for people, animals, and plants. Prehistoric Asian hunters may have entered the Americas here. The Chukchi and Bering Seas now cover the land bridge. Today Eskimos from neighboring villages pursue subsistence lifestyles and manage reindeer herds in and near the preserve. More than 112 migratory bird species can be seen here and occasional seals, walrus, and whales. Muskoxen, grizzly bears, foxes, wolves, and moose also inhabit the preserve.