If we divide up the ocean among the current 7 billion human inhabitants of Earth, we each have only one fifth of a cubic kilometer of ocean. That relatively small amount of water generates half the oxygen we breathe in a year, all of the seafood that we consume, a third of the oil and gas we burn, as well as other commodities that we use. Our ever-growing population is the ultimate driver for increased use of these resources and access to ocean space.
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From collection: World Ocean Assessment Overview