How does water move between the Pacific Ocean and the Bering Sea?
Warm oceanic waters from the Pacific Ocean enter the Bering Sea primarily through numerous straits in the Fox Islands, as well as through the Amchitka, Tanaga, and Blizhny passes. Once inside, these waters are transported northwestward by the Attu, Tanaga, and Transverse currents.1
The circulation within the sea is complex: the Transverse Current branches to form the Lawrence and Anadyr currents, the latter of which contributes to the powerful Kamchatka Current that drives the southward movement of water along the Asian coast. Near the Alaskan coast, the general flow is northward. While some water continues through the Bering Strait into the Arctic Ocean, the bulk of the water eventually returns to the Pacific. Deep waters rise to the surface and exit the sea as surface waters, making the Bering Sea a vital component of the northern Pacific's general circulation. Additionally, a branch of the Aleutian Current enters the sea, forming a counterclockwise gyre.123