Page 18: of Marine Technology Magazine (September 2015)

Ocean Observation: Gliders, Buoys & Sub-Surface Networks

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Eye on the Ocean cientists say that the world’s oceans are acidifying. Higher levels of carbon dioxide in seawater cause chemical

This term is correct, but somewhat misleading. Until reactions that reduce the saturation state of calcium carbon- recently, the oceans have had (so far as can be deter- ate minerals such as aragonite and calcite. Many marine or-

Smined) a pH level of about 8.4 for millennia. A pH ganisms, including oysters, clams, star

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