San Diego weather is often the weather that laughs at you. For some reason, the forecast will say clear skies and clouds will roll in off the ocean, or the forecast will tell you to wear a jacket for an overcast day and the sun will come out to play.
A sea is a large body of saline water that may or may not be connected to an ocean, though commonly these are. However, the body is smaller compared to an ocean. It is believed to lack a natural outlet. Seas are usually located near land and are used to connect the land with an ocean.
The word sea can also mean the vast ocean covering most of the world. But it more commonly refers to large landlocked or almost landlocked salty waters smaller than the great oceans, such as the Mediterranean Sea or the Bering Sea. Sailors have long referred to all the world's waters as the seven seas.