The best way to get out of this current is to float parallel to shore till you are out of the Rip Current, then swim to shore. The sand dunes on the Lake Michigan beaches are enormous. Definitely a way to get your exercise. Sand dunes can only grow if plants anchor the sand so it doesn't blow away. If sand dunes have no protection they will move and are called wandering dunes or live dunes.
Nothing can stop the sand from moving.
This giant dune is moving inland about 4-5 feet per year. When the sand is blowing off the top of the dune, it appears as wisps of smoke. The sand actually makes music if you listen as you walk across the sands. The combination of quartz crystals, moisture, pressure and friction from your feet creates a musical tone. There are only a few beaches worldwide that are known to sing with this same tone.