How did so many Israelites get through the Red Sea in such a short time?

Les explains that the movie The Ten Commandments misrepresents the crossing by showing a narrow channel; you could never move three to seven million people plus livestock and herds through such a narrow passage. He is convinced God not only moved the whole multitude miraculously faster than a three-mile-an-hour walk, but also opened the Red Sea an amazing amount of distance. He had to do so for that large a multitude to pass through in such a short time. Scripture says the children of Israel walked on dry land in the midst of the sea, with waters as a wall on their right and left. Les also sees the crossing as a picture of salvation, indicating Christ's burial and resurrection.