Pacific
1. The largest and deepest ocean.
2. It spreads out 168.72 million sq.km
3. The Bering Sea, The China sea, the Sea of Japan, Tasman Sea, Philippines Sea are some of the marginal seas.
Atlantic
1. Second largest ocean
2. It spreads about 85.13 million sq.km
3. Mediterranean Sea, The Caribbean Sea, the Gulf of Mexico, the North Sea, the Gulf of Guinea are important marginal seas.