The Pacific Ocean is the largest ocean basin on Earth.
The Atlantic Ocean separates the Americas from Europe and Africa.
The Indian Ocean lies mainly between Africa, Asia, and Australia.
The Southern Ocean encircles Antarctica and connects the Atlantic, Indian, and Pacific Oceans.
The Arctic Ocean is the smallest and shallowest of the five major oceans.
The Great Barrier Reef lies off northeastern Australia in the Coral Sea.
The Mediterranean Sea connects to the Atlantic Ocean through the Strait of Gibraltar.
The Red Sea lies between northeastern Africa and the Arabian Peninsula.
The Persian Gulf is a shallow sea between Iran and the Arabian Peninsula.
The Caribbean Sea is part of the Atlantic Ocean basin and borders Central America and the northern coast of South America.
The Mariana Trench in the western Pacific is the deepest known point in Earth's oceans.
The Gulf Stream is a powerful warm ocean current that flows from the Gulf of Mexico along the eastern coast of North America.
The Black Sea is an inland sea connected to the Mediterranean Sea through the Bosporus and Dardanelles straits.
The Baltic Sea is a brackish water body in northern Europe, connected to the North Sea.
The Bering Strait separates Asia (Russia) from North America (Alaska) and connects the Pacific and Arctic Oceans.
The Sargasso Sea is a region in the North Atlantic Ocean known for its floating seaweed and calm waters.
Tides are caused by the gravitational pull of the Moon and Sun on Earth's oceans.
Tsunamis are large ocean waves typically caused by underwater earthquakes or volcanic eruptions.
The continental shelf is the shallow underwater extension of continents, rich in marine resources.
Ocean acidification occurs when carbon dioxide dissolves in seawater, affecting marine ecosystems.