The one on the right is apparently a "new" baby, who is quite grown by the looks of it.
This elephants over here was responding to all of the zookeepers commands which are used to help check to make sure nothing is wrong medically.
This elephant was inside an area, with lots of sand on the floor.
I've seen crews hose down elephants at Zoo Atlanta, but all she was doing was making the sand wet. Didn't quite understand the science behind that.