Bering Strait

The Bering Strait is a narrow maritime passage connecting the Pacific and Arctic oceans. It serves as a physical boundary between two massive continents. The strait separates the Chukchi Peninsula in the Russian Far East from the Seward Peninsula in Alaska.

To the north, it borders the Chukchi Sea. To the south, it meets the Bering Sea. The maritime boundary between Russia and the United States sits at 168° 58' 37" W longitude. This line is located just south of the Arctic Circle.

The geography of the strait is defined by its narrowness and shallow depths. At its narrowest point, the distance between Cape Dezhnev in Russia and Cape Prince of Wales in Alaska is only about 55 miles. Cape Dezhnev is the easternmost point of the Asian continent. Cape Prince of Wales is the westernmost point of the North American continent. The deepest part of the strait is only 160 feet deep. This shallow water creates a unique habitat for many species. The region is sparsely populated by the Yupik, Inuit, and Chukchi people. These groups share close cultural and linguistic ties with one another.

One of the most significant scientific theories involves the concept of Beringia. Scientists believe a land bridge once connected Asia and North America. This happened when ocean levels were much lower due to massive glaciers. These glaciers locked up vast amounts of Earth's water. As a result, a wide stretch of the sea floor was exposed. This area included the present strait and the shallow seas north and south of it. This land bridge allowed Paleo-Indians to migrate from Asia to North America. This theory remains the most widely accepted explanation for how humans first entered the Americas.

History shows a long timeline of exploration and crossing attempts. The strait is named after Vitus Bering, a Danish-born Russian explorer who entered it in 1728. Semyon Dezhnyov likely passed through the area in 1648, though his report did not reach Europe at that time. In 1732, Mikhail Gvozdev became the first European to cross from Asia to America. By 1847, American vessels were using the strait to hunt for bowhead whales. Modern explorers have used many different methods to cross the water. In 1913, Captain Max Gottschalk crossed from Siberia to Alaska using a dogsled. In 1987, Lynne Cox swam between the Diomede Islands during the Cold War.

The Diomede Islands are a notable feature located within the strait. These two islands sit very close to each other. Little Diomede belongs to the United States, while Big Diomede belongs to Russia. During the Cold War, this border was known as the "Ice Curtain." This name described how the border between the Soviet Union and the U.S. was completely closed. Indigenous people used to cross for trade and festivals, but they were prevented from doing so. Since 2012, the Russian coast of the Bering Strait has been a closed military zone. Visitors must use special permits and arrive through specific airports like Anadyr or Provideniya.

Humans have often proposed massive engineering projects to link the two continents. In 1906, Baron Loicq de Lobel proposed a bridge and tunnel link. Although Czar Nicholas II authorized the Trans-Siberian Alaska railroad project, no physical work began. In 2011, Russia approved the TKM-World Link tunnel project. This project is estimated to cost US$65 billion. If it were ever completed, it would be the longest tunnel in the world. China has also considered a massive railroad line that would include an underwater tunnel through the strait.

Scientists have also considered using geological engineering to alter the environment. In 1956, the Soviet Union proposed a joint project to build a dam across the strait. The goal was to warm the Arctic Ocean by blocking cold Pacific currents. By pumping low-salinity water across the dam, warmer Atlantic water could enter the Arctic. However, experts from the CIA and FBI opposed this due to national security concerns. Other scientists argued that such a dam would make Siberian rivers unnavigable. Today, some modern proposals suggest building a dam for the opposite reason. These new ideas aim to preserve the Arctic ice cap against global warming.