Answer:
There are 5 Oceans: Atlantic, Pacific, Arctic, Southern and Indian. There are 113 seas altogether (if you include the landlocked seas-110 if not).
The Atlantic ocean connects to 40, the Arctic: 17, the Pacific: 33, the Southern Ocean: 11, the Indian ocean: 9 and there are 3 landlocked seas, dead, Caspian and aral (although these could be classed as salt lakes)