The well known story is described in Exodus 14:23-28:
“And the Egyptians pursued and went after them into the midst of the sea, all Pharaoh’s horses, his chariots, and his horsemen. Now it came to pass, in the morning watch, that the LORD looked down upon the army of the Egyptians through the pillar of fire and cloud, and He troubled the army of the Egyptians. And He took off their chariot wheels, so that they drove them with difficulty; and the Egyptians said, “Let us flee from the face of Israel, for the LORD fights for them against the Egyptians.”
Then the LORD said to Moses, ‘Stretch out your hand over the sea, that the waters may come back upon the Egyptians, on their chariots, and on their horsemen.’ And Moses stretched out his hand over the sea; and when the morning appeared, the sea returned to its full depth, while the Egyptians were fleeing into it. So the LORD overthrew the Egyptians in the midst of the sea. Then the waters returned and covered the chariots, the horsemen, and all the army of Pharaoh that came into the sea after them. Not so much as one of them remained.”