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.
The draft usually takes place at the end of June, during the NBA off-season. Since 1989, the draft has consisted of two rounds; this is much shorter than the entry drafts of the other major professional sports leagues in the United States and Canada, all of which run at least seven rounds. Sixty players are selected in each draft.