Oceans in Danger News ranks number 3 is most censored stories of 2006

3. Oceans of the World in Extreme Danger

Oceanic problems once found on a local scale are now pandemic. Data from oceanography, marine biology, meteorology, fishery science, and glaciology reveal that the seas are changing in ominous ways. A vortex of cause and effect wrought by global environmental dilemmas is changing the ocean from a watery horizon with assorted regional troubles to a global system in alarming distress.
According to oceanographers the oceans are one, with currents linking the seas and regulating climate. Sea temperature and chemistry changes, along with contamination and reckless fishing practices, intertwine to imperil the world's largest communal life source.In 2005, researchers from the Scripps Institution of Oceanography and the Lawrence Livermore National Laboratory found clear evidence the ocean is quickly warming. They discovered that the top half-mile of the ocean has warmed dramatically in the past forty years as a result of human-induced greenhouse gases.
One manifestation of this warming is the melting of the Arctic. A shrinking ratio of ice to water has set off a feedback loop, accelerating the increase in water surfaces that promote further warming and melting. With polar waters growing fresher and tropical seas saltier, the cycle of evaporation and precipitation has quickened, further invigorating the greenhouse effect. The ocean's currents are reacting to this freshening, causing a critical conveyor that carries warm upper waters into Europe's northern latitudes to slow by one third since 1957, bolstering fears of a shut down and cataclysmic climate change. This accelerating cycle of cause and effect will be difficult, if not impossible, to reverse. Atmospheric litter is also altering sea chemistry, as thousands of toxic compounds poison marine creatures and devastate propagation.
The ocean has absorbed an estimated 118 billion metric tons of carbon dioxide since the onset of the Industrial Revolution, with 20 to 25 tons being added to the atmosphere daily. Increasing acidity from rising levels of CO2 is changing the ocean's PH balance. Studies indicate that the shells and skeletons possessed by everything from reef-building corals to mollusks and plankton begin to dissolve within forty-eight hours of exposure to the acidity expected in the ocean by 2050. Coral reefs will almost certainly disappear and, even more worrisome, so will plankton.

Phytoplankton absorb greenhouse gases, manufacture oxygen, and are the primary producers of the marine food web. Mercury pollution enters the food web via coal and chemical industry waste, oxidizes in the atmosphere, and settles to the sea bottom. There it is consumed, delivering mercury to each subsequent link in the food chain, until predators such as tuna or whales carry levels of mercury as much as one million times that of the waters around them. The Gulf of Mexico has the highest mercury levels ever recorded, with an average of ten tons of mercury coming down the Mississippi River every year, and another ton added by offshore drilling.