Question

how many oceans are there ? Name them?​

Answer 1

Since the 19th century, the term has been taken to include seven oceanic bodies of water:
the Arctic Ocean.
the North Atlantic Ocean.
the South Atlantic Ocean.
the Indian Ocean.
the North Pacific Ocean.
the South Pacific Ocean.
the Southern (or Antarctic) Ocean.

Answer 2

There is only one global ocean.

Historically, there are four named ocean basins: the Atlantic, Pacific, Indian, and Arctic. However, most countries - including the United States - now recognize the Southern (Antarctic) as the fifth ocean basin. The Pacific, Atlantic, and Indian are the most commonly known.