This video clearly shows a change in the tides as the day goes on. In this video it starts out with people on the beach area, but as the day goes on the people are being pushed back by the rising tide until the water is completely covering the beach area. You later see kayakers who come and boat around the now fully watered area. This video demonstrates how a tide starts out low and works its way back to a low tide at the end of the day which is approximately twelve hours.
