Saltstraumen

Positioned near the Arctic Circle, the mightiest maelstrom in the world creates the strongest tidal currents on the globe. Every six hours, vigorous ocean currents can run up to 25 miles per hour as more than 105,668 gallons of water surge through the narrow strait that connects Skjerstadfjord and Saltenfjord. When the tidal currents turn, there is a “time window” when larger ships can sail through the sound. In fact, currents appear essentially calm during that time. Nevertheless locals and tourists are advised to use great caution when down by the sea or in a boat since the underwater currents are constantly churning, the water twisting, making the Maelstrom of Saltstraumen the most dangerous maelstrom on the planet. (momtastic.com)