Ocean acoustic tomography water formation and the gyre circulation. Other applications include the measurement of ocean tides, and the estimation of ocean mesoscale dynamics by combining tomography, satellite altimetry, and in situ data with ocean dynamical models. In addition to the decade-long measurements obtained in the North Pacific, acoustic thermometry has been employed to measure temperature changes of the upper layers of the Arctic Ocean basins, which continues to be an area of active interest. using data from acoustic pulses sent from one end of the earth to the other. Acoustic thermometry is an idea to observe the world's ocean basins, and the
Friends of the Earth (US) grocery store chains such as Safeway, Kroger and Whole Foods Market to pledge to not sell AquAdvantage genetically engineered salmon, should it receive Food and Drug Administration (FDA) approval. In 2012 the Emission Control Area, which restricts airborne emissions from ships in certain sea areas, went into effect in North America after Friends of the Earth U.S. advocated for it for many years. Friends of the Earth also successfully advocated for a ban on the dumping of sewage and other wastewater from cruise ships and large ocean-going vessels in the five west coast National Marine Sanctuaries. Friends of the Earth