An especially powerful whirlpool is known as a maelstrom; one of the more notable maelstroms is the Moskstraumen, an immense network of eddies and whirlpools off the coast of Norway. Several things can lead to the formation of a whirlpool. Most commonly, whirlpools are caused by the meeting of opposing currents. When the currents are strong enough, they can start to wrap around each other, creating a spiral of rapidly swirling water.
In this May 20, 2014, file photo, Cleveland Cavaliers general manager David Griffin, left, and minority owner Jeff Cohen celebrate after the Cavaliers won the top pick in the the NBA basketball draft lottery in New York. The 2015 NBA draft lottery will take place in New York on Tuesday, May 19, 2015.
Explaining how the NBA Draft lottery works. How the NBA's weighted draft system works can be confusing, so we set out to explain just how your favorite team could end up with the top pick in the 2014 NBA Draft. Update: Cleveland wins the top pick in the NBA Draft. The top picks in the 2014 NBA Draft will be determined when the draft lottery is held on Tuesday at the Barclays Center in New York.