The Arabian Sea, a northwestern arm of the Indian Ocean bordered by Oman, Pakistan, India, the Maldives, Sri Lanka, Iran, and Yemen, spans roughly 3,862 km long by 2,400 km wide (3.86 million km²). Its deepest point is the Owen Fracture Zone, plunging to 4,652 meters (15,262 ft). This tectonic feature marks the boundary between the Arabian and African plates.