According to research published in the journal ‘Nature Communications’, as Earth continues to warm, oceans turn deeper shades of blue and green and the changes in color are in part a function of the fluctuating populations of phytoplankton or algae.

The researchers estimate that more than 50 percent of the world’s oceans will exhibit changes in color by the year 2100, as their algae populations rise and fall.

Climate change will wreak different effects on different communities of phytoplankton as every species is different.

The researchers watched the colors change as they raised the temperature by three degrees Celsius — an increase that, judging by current trends, could really occur by 2100.

Anna Hickman, an oceanographer at the University of Southampton in England, says that the changes in color may not be noticeable to the naked human eye, however clear they are to satellites.

According to World Economic Forum, other changes in the water could be all too apparent: Where algae populations fall and fish have less to eat, global fish catch could decline by 20 percent by the year 2300.

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