What was the name of the Confederate sub in the civil war?

@OwnerOfManyGood answer,but the Merrimac and the Monitor were first Ironclad surface ships.

@lucyyy True, I was thinking about how low in the water they were...but they did not submerge.

@lucyyy Was the Hunley or Hunly the sub?

@OwnerOfMany

@lucyyy Thanks...I hadn't seen drawings of them since I was a kid. Brings back memories of my third grade teacher who had a face like an English bulldog!