What nickname is given to sailors who have not crossed the Equator? What are they called after crossing?

Crossing the equator was a right of passage for the rookies. The event was traditionally celebrated with ceremonies, which have come to be called the “crossing the line” ceremonies. In the past, these events were often cruel and involved a great deal of hazing of the pollywogs by the shellbacks. After a significant amount of punishment and harassment had been dealt, pollywogs could finally join the ranks of the more experienced shellback sailors.