Sea level is the base level for measuring elevation and depth on Earth. These hotel bungalows in Bora Bora, French Polynesia, have stilts to take them inches above sea level. Because the ocean is one continuous body of water, its surface tends to seek the same level throughout the world. However, winds, ocean currents, river discharges, and variations in gravity and temperature prevent "sea level" from being truly level.

Photograph by Greg Goin, MyShot
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sea level
sea level Encyclopedic Entry

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Encyclopedic entry. Sea level is the base level for measuring elevation and depth on Earth.

Australia and Oceania: Human Geography
Australia and Oceania: Human Geography Encyclopedic Entry

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Encyclopedic entry. The geography of Oceania defines its historic and contemporary cultures.

Australia and Oceania: Resources
Australia and Oceania: Resources Encyclopedic Entry

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Encyclopedic entry. Oceania’s natural resources support both subsistence and export-based economies.