There is one connected global ocean, but it’s usually divided into five named oceans: Pacific, Atlantic, Indian, Arctic, and Southern (Antarctic).

Quick Scoop: Short answer

  • Most modern maps, textbooks, and governments: 5 oceans.
  • Traditional/older view: 4 oceans (Pacific, Atlantic, Indian, Arctic), with the Southern Ocean not listed separately.
  • Scientific perspective: all of these are parts of a single global ocean that covers about 71% of Earth.

Why people give different numbers

Some sources still say “four oceans” because for a long time only the Pacific, Atlantic, Indian, and Arctic were officially named on most maps.

Since around 2000, many scientific bodies and countries have formally recognized the Southern Ocean around Antarctica as a fifth ocean, even though its exact boundaries are still debated.

So:

  • Saying “four oceans ” = historically traditional, still seen in older books.
  • Saying “five oceans ” = current common standard in schools, atlases, and by organizations like NOAA and many governments.

Mini breakdown of the five

  • Pacific Ocean – Largest and deepest, covers more area than all land combined.
  • Atlantic Ocean – Second largest, between the Americas and Europe/Africa.
  • Indian Ocean – Between Africa, Asia (Indian subcontinent), and Australia.
  • Arctic Ocean – Smallest and shallowest, centered on the North Pole.
  • Southern Ocean – Encircles Antarctica, generally defined as waters south of 60° S latitude.

Simple forum-style takeaway

If someone asks on a forum in 2026, the safest everyday answer is:
“There’s one global ocean, but we usually divide it into five oceans: Pacific, Atlantic, Indian, Arctic, and Southern.”

TL;DR: One global ocean, commonly counted as five named oceans today, though older sources still say four.

Information gathered from public forums or data available on the internet and portrayed here.