Introduction to the ocean's role in the global water cycle as the ultimate destination for terrestrial water, balancing evaporation with precipitation and runoff.
Learn MotionWhy Oceans Don't Drain Into the Ground
The Global Water Cycle Balance
The Ocean as the Hydrological Sink
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Now that we've seen how water gets trapped deep underground, let's look at the big picture. The ocean is the main reservoir of the global water cycle. It loses water to the air through evaporation, but it gains water back through rain and rivers flowing from the land. This constant exchange creates a balance that keeps the ocean's volume stable over time.
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