As we left the beach I took this photo of the Danger sign. Just offshore there a extreme currents and we are warned of the dangers of swimming into those currents.
Sail boats often pass through those waters between the beach and the sandbar.
Following is an website for NOAA tides and currents. Also, a link has been included for today’s photo saved on Flickr with the caption There are extreme currents offshore on Seabrook Island in South Carolina.