Five oceans · Endless depths · Ancient secrets
More than 70% of our planet is water. Earth's five oceans hold 97% of all life, 95% of which remains unexplored. Your descent begins here.
The five oceans
Each ocean has its own character, its own depths, and its own wonders. Dive in and discover what lies beneath.
The largest and deepest ocean on Earth. The Mariana Trench plunges deeper than Everest is tall. It holds more than half of all the world's ocean water.
The ocean that connects the Old World and the New. The Mid-Atlantic Ridge — the longest mountain range on Earth — runs along its floor.
The warmest of the world's oceans. Ancient mariners navigated its monsoon winds for millennia to trade spices, silk, and gold across continents.
The newest named ocean, encircling Antarctica. The Antarctic Circumpolar Current is the planet's largest ocean current, driving global climate systems.
The smallest and shallowest ocean, covered by sea ice for much of the year. Polar bears, narwhals, and the midnight sun call this frozen frontier home.
The Oceans Quiz is coming soon — test your knowledge of depths, currents, and marine life across four challenging tiers.