Diana Strait
Russia
Diana Strait (Proliv Diany, Shimushiru Kaikyo) is a deep strait that separates the islands of Ketoy and Simushir in the Kuril Islands, Russia. It is 16.1 km (about 10 mi) wide. The flood tidal current in the strait sets northwest, while the ebb flows to the southeast. These currents may reach up to three knots.
Data from Wikidata (CC0). Summary from Wikipedia (CC BY-SA).