Exodus 14:27-29

27So Moses stretched out his hand over the sea, and at daybreak the sea returned to its normal depth. While the Egyptians were trying to escape from it, the Lord threw them into the sea.

28The water came back and covered the chariots and horsemen, plus the entire army of Pharaoh that had gone after them into the sea. Not even one of them survived.

29But the Israelites had walked through the sea on dry ground, with the waters like a wall to them on their right and their left.