God was often just as creative in removing the plagues as He was in sending them. Consider the removal of the locusts:
And the LORD turned a mighty strong west wind, which took away the locusts, and cast them into the Red sea; there remained not one locust in all the coasts of Egypt. (Exodus 10:19)
Since this is the first mention of the Red Sea, The Dake Annotated Reference Bible offers the following note from page 74 of the Old Testament:
The first mention of the Red Sea. It played a prominent part in the exodus (13:18; 14:1-31; 15:1-19; Josh. 2:10; Ps. 106:7, 9, 22; 136:13-15; Acts 7:36; Heb. 11:29). Red may refer to Edom or Esau whose name means red and whose lands extended to its coasts (Gen. 25:25). The Red Sea separates Arabia from Upper Ethiopia and part of Egypt. It is about 1,350 miles long and 250 miles wide at the midsection. It gradually diminishes toward the Suez Canal. A strong south wind blows from October to May, raising the sea level several feet; but it is correspondingly lowered between May and October when the wind blows from the north. In the north section the sea is divided into the Gulf of Suez and the Gulf of Aqaba which are separated by the Sinai peninsula.