Ocean or Sea?

Oceans are the major interconnected bodies of salt water that cover three-quarters of the earth's surface. A sea is a large body of salt water connected to an ocean but is partially surrounded by land.

The International Hydrographic Organization (IHO) headquartered in Monaco is in charge of defining bodies of water.

Names of oceans are:

• Pacific Ocean
• Atlantic Ocean
• Indian Ocean
• Southern Ocean
• Arctic Ocean

Smaller bodies of water are:

• seas,
• gulfs
• straits
• lakes

A complete list of the world's seas and the oceans they are connected to can be found at Wikipedia's Sea page. Landlocked seas are also listed.