Vitus Bering in the context of "Steller's sea cow"

The Bering Strait (/ˈbɛərɪŋ, ˈbɛrɪŋ/ BAIR-ing, BERR-ing, US also /ˈbɪərɪŋ/ BEER-ing; Russian: Берингов пролив, romanized: Beringov proliv) is a strait between the Pacific and Arctic oceans, separating the Chukchi Peninsula of the Russian Far East from the Seward Peninsula of Alaska. The present Russia–United States maritime boundary is at 168° 58' 37" W longitude, slightly south of the Arctic Circle at about 65° 40' N latitude. The Strait is named after Vitus Bering, a Danish-born Russian explorer.

The Bering Strait has been the subject of the scientific theory that humans migrated from Asia to North America across a land bridge known as Beringia when lower ocean levels – a result of glaciers locking up vast amounts of water – exposed a wide stretch of the sea floor, both at the present strait and in the shallow sea north and south of it. This view of how Paleo-Indians entered America has been the dominant one for several decades and continues to be the most accepted one. Numerous successful crossings without the use of a boat have also been recorded since at least the early 20th century.

From 1732 to 1867, the Russian Empire laid claim to northern Pacific Coast territories in the Americas. Russian colonial possessions in the Americas were collectively known as Russian America from 1799 to 1867. It consisted mostly of present-day Alaska in the United States, but also included the outpost of Fort Ross in California. Russian Creole settlements were concentrated in Alaska, including the capital, New Archangel (Novo-Arkhangelsk), which is now Sitka.

Russian expansion eastward began in 1552, and Russian explorers reached the Pacific Ocean in 1639. In 1725, Emperor Peter the Great ordered navigator Vitus Bering to explore the North Pacific for potential colonization. The Russians were primarily interested in the abundance of fur-bearing mammals on Alaska's coast, as stocks had been depleted by overhunting in Siberia. Bering's first voyage was foiled by thick fog and ice, but in 1741 a second voyage by Bering and Aleksei Chirikov discovered part of the North American mainland. Bering claimed the Alaskan country for the Russian Empire. Russia later confirmed its rule over the territory with the Ukase of 1799 which established the southern border of Russian America along the 55th parallel north. The decree also provided monopolistic privileges to the state-sponsored Russian-American Company (RAC) and established the Russian Orthodox Church in Alaska.

The Bering Sea (/ˈbɛərɪŋ, ˈbɛrɪŋ/ BAIR-ing, BERR-ing, US also /ˈbɪərɪŋ/ BEER-ing; Russian: Бе́рингово мо́ре, romanized: Béringovo móre, IPA: [ˈbʲerʲɪnɡəvə ˈmorʲe]) is a marginal sea of the Northern Pacific Ocean. It forms, along with the Bering Strait, the divide between the two largest landmasses on Earth: Eurasia and the Americas. It comprises a deep water basin, which then rises through a narrow slope into the shallower water above the continental shelves. The Bering Sea is named after Vitus Bering, a Danish-born Russian navigator, who, in 1728, was the first European to systematically explore it, sailing from the Pacific Ocean northward to the Arctic Ocean.

The Bering Sea is separated from the Gulf of Alaska by the Alaska Peninsula. It covers over 2,000,000 square kilometers (770,000 sq mi) and is bordered on the east and northeast by Alaska, on the west by the Russian Far East and the Kamchatka Peninsula, on the south by the Alaska Peninsula and the Aleutian Islands and on the far north by the Bering Strait, which connects the Bering Sea to the Arctic Ocean's Chukchi Sea. Bristol Bay is the portion of the Bering Sea between the Alaska Peninsula and Cape Newenham on mainland Southwest Alaska.

The Fox Islands (Russian: Лисьи острова) are a group of islands in the eastern Aleutian Islands of the U.S. state of Alaska. The Fox Islands are the closest to mainland North America in the Aleutian chain, and just east of Samalga Pass and the Islands of Four Mountains group.

Inhabited by the Aleut for centuries, the islands, along with the rest of the Aleutians, were first visited by Europeans in 1741, when an Imperial Russian Navy expedition led by Vitus Bering was searching for new sources of fur for Russian fur trappers.

The First Kamchatka Expedition was the first Russian expedition to explore the Asian Pacific coast. It was commissioned by Peter the Great in 1724 and was led by Vitus Bering. Afield from 1725 to 1731, it was Russia's first naval scientific expedition. It confirmed the presence of a strait (now known as Bering Strait) between Asia and America and was followed in 1732 by the Second Kamchatka Expedition.

The expedition spent the first two years, from January 1725 to January 1727, traveling from Saint Petersburg to Okhotsk, using horses, dog sleds and river boats. After wintering in Okhotsk it moved to the mouth of the Kamchatka River on the east coast of the peninsula. In July–August 1728 it sailed north and then north-east along the shore, exploring Karaginsky Gulf, Kresta Bay, Providence Bay, Gulf of Anadyr, Cape Chukotsky, and St. Lawrence Island.

The Great Northern Expedition (Russian: Великая Северная экспедиция) or Second Kamchatka Expedition (Russian: Вторая Камчатская экспедиция) was a major Russian Arctic expedition between roughly 1733 and 1743, which mapped most of the Arctic coast of Siberia and much of the Arctic coast of North America, greatly reducing "white areas" on maps. It was conceived by Russian emperor Peter the Great, and took place under empresses Anna and Elizabeth. Peter hoped for the 18th-century Russian Navy to map a Northern Sea Route from Europe to the Pacific. The endeavour was sponsored by the Admiralty College in Saint Petersburg. The main organiser and leader of the expedition was Vitus Bering, who had been commissioned by Peter to lead the earlier First Kamchatka Expedition (1725 to 1731). With over 3,000 people directly or indirectly involved, it was one of the largest expeditions in history.

The expedition's primary objective was reaching the eastern reaches of Siberia, and from there the western shores of North America. The expedition included the European discovery of Alaska, the Aleutian Islands, the Commander Islands, and Bering Island—as well as a detailed cartographic assessment of the northern and north-eastern coast of Russia and the Kuril Islands. Any large landmass in the North Pacific, as well as any economically viable Northeast Passage sought since the 16th century, were both proven not to exist. Other findings included ethnographic, historic, and scientific research into Siberia and Kamchatka. Its cost was an estimated 1.5 million rubles, financed entirely by the Russian state, equal to roughly one-sixth of state income in 1724.

Aleksei Ilyich Chirikov (Russian: Алексе́й Ильи́ч Чи́риков; 1703 – November 14, 1748) was a Russian navigator and captain who, along with Vitus Bering, was the first Russian to reach the northwest coast of North America. He discovered and charted some of the Aleutian Islands while he was deputy to Vitus Bering during the Great Northern Expedition.