How many main seas are there?

The International Hydrographic Organization (IHO) divides the world's oceans into 51 areas, including 29 seas and 22 bays and gulfs. Here are the major main seas:

1. Arctic Ocean

- Barents Sea

- Beaufort Sea

- Chukchi Sea

- East Siberian Sea

- Kara Sea

- Laptev Sea

- Lincoln Sea

- Norwegian Sea

- Wandel Sea

2. North Atlantic Ocean

- Azores Sea

- Baffin Bay

- Baltic Sea

- Bay of Biscay

- Caribbean Sea

- Celtic Sea

- Davis Strait

- Greenland Sea

- Gulf of Mexico

- Hudson Bay

- Irish Sea

- Labrador Sea

- Mediterranean Sea

- North Sea

3. South Atlantic Ocean

- Argentine Sea

- Drake Passage

- Gulf of Guinea

- Weddell Sea

4. Indian Ocean

- Andaman Sea

- Arabian Sea

- Bay of Bengal

- Great Australian Bight

- Gulf of Oman

- Mozambique Channel

- Red Sea

5. North Pacific Ocean

- Bering Sea

- East China Sea

- Gulf of Alaska

- Japan Sea

- Philippine Sea

- Sea of Okhotsk

- South China Sea

- Yellow Sea

6. South Pacific Ocean

- Amundsen Sea

- Bellingshausen Sea

- Coral Sea

- East China Sea

- Ross Sea

- Tasman Sea

These seas play significant roles in global climate regulation, ecosystems, and human activities, including fishing, shipping, and recreation.