The four large bodies of water that touch the Arabian Peninsula are:

1. The Red Sea: Located to the west of the peninsula, it separates the Arabian Peninsula from the African continent.

2. The Persian Gulf: Situated to the east of the peninsula, it separates the Arabian Peninsula from Iran.

3. The Arabian Sea: Located to the south of the peninsula, it is part of the Indian Ocean.

4. The Gulf of Oman: Located to the southeast of the peninsula, it connects the Arabian Sea to the Persian Gulf.