Yes, there is oil in the ocean- not just from the oil spills, but there are other contributing factors as well. Roughly around 37% comes from the mixture of materials and wastes from industrial plants that spill into the water.
7% comes from the seabed naturally. This is usually the oil and tar that you see while walking on the coastline.
2% comes from the exploration and production phases of the oil industry.
12% comes from the accidents that come from the Oil tankers and ships.
33% comes from the operation of theses oil tankers and ships.
The remainder of the 9% is absorbed from the atmosphere..