Saltstraumen — the strongest tidal current in the world — is a well known place for divers. It’s located about 10 km outside of Bodø in Northern Norway, which makes is accessible for those who dare (and have the experience/certifications needed to dive these depths).
The video below shows a dive in this amazing place.
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)
More about diving in Saltstrumen
One of the main dive operators in the area writes:
As the tidal water passes the narrow and shallow straight every sixth hour it pushes rich nutrients up from the deep sea floor. This gives Saltstraumen a unique underwater biotope and you can expect a huge diversity and quantity of marine life.
The visibility is usually very good, especially in the beginning and the end of the season. In February/March and september/october we can have up to 60 meters. The visibility varies in the summer season, but is still usually good, and the kelp forrest`s and anemones are in full bloom.