Sea | Ocean |
A sea is a smaller water body as compared to an ocean. | An ocean is a bigger water body as compared to a sea. |
A sea is a smaller division of water mass attached to an ocean. It is usually located at a place where a land and an ocean meet. | An ocean is a larger division of water mass on the Earth. |
Examples of seas include the Arabian Sea, the Bay of Bengal and the Black Sea. | Examples of oceans include the Pacific Ocean, the Atlantic Ocean, the Indian Ocean and the Arctic Ocean. |