Oceans Instant

: Bordered by Africa, Asia, and Australia, it is a key region for marine biodiversity.

The ocean is structured into vertical zones defined by depth and light penetration: Ocean habitat | National Geographic Kids Oceans

While often discussed as a single global system, geographers divide the ocean into five distinct basins based on size and location: : Bordered by Africa, Asia, and Australia, it

: The second largest, stretching between the Americas and Europe/Africa. : Bordered by Africa

: The smallest and shallowest, located around the North Pole. Layers of the Deep

: The largest and deepest, covering more area than all Earth's landmasses combined.