If you're in the United States, then the East Coast ocean is the Atlantic Ocean.
East coast is The Atlantic Ocean. West coast in The Pacific Ocean.
Atlantic ocean
The United States is bordered by the Atlantic Ocean on its east coast and the Pacific Ocean on the west coast.
The Pacific Ocean is off the West coast of America and the Atlantic is on the East coast.
The Atlantic Ocean lies off the west coast of Scotland but there is no ocean on its east coast, just the North Sea.
Australia borders both the Indian Ocean on the west coast and the Pacific Ocean on the east coast.
The Gulf Stream is the ocean current that runs along the east coast of the United States. It flows northward along the coast, bringing warm water from the Gulf of Mexico up to the Atlantic Ocean.
The Mozambique current
My East Coast relatives call this a clambake!
the South East coast of France (the French Riviera)
The Bay of Bengal
many oceans