The Bering Strait is a narrow body of water that separates Alaska in the United States from Siberia in Russia. It connects the Chukchi Sea to the north and the Bering Sea to the south. The strait is approximately 85 kilometers (53 miles) wide at its narrowest point and plays a significant role in marine navigation and ecology. The strait is also historically important, as it is believed to have been the route for early human migration from Asia to North America via the Bering Land Bridge during the last Ice Age. Today, the Bering Strait is a vital area for wildlife, including various species of fish, marine mammals, and migratory birds.