Belly Dance Every Day - The Body Wave
A body wave is an undulation that is a camel in reverse.
Start in your basic stance. Tuck your pelvis forward, roll the move up and drop your ribs (you will be in a slight slouch - please note that this is when someone will decide to take your picture!), and straighten your body by releasing the tuck and straightening your shoulders and back.
To make this move a little easier, combine it with a camel. So you will camel down with your body and then body wave up.