Saltstraumen whirlpools (maelstroms) Водовороты Сальстраумен

The Saltstraumen whirlpools (maelstroms) has the strongest tidal current in the world. Up to 400,000,000 cubic metres (520,000,000 cu yd) of seawater forces its way through a 3-kilometre (1.9 mi) long and 150-metre (490 ft) wide strait every six hours, with water speeds reaching 22 knots (41 km/h; 25 mph). Vortices known as whirlpools or maelstroms up to 10 metres (33 ft) in diameter and 5 metres (16 ft) in depth are formed when the current is at its strongest. Сальтстраумен - одно из сильнейших в мире приливных течений (Бодо, Норвегия). Maelstrom