As our oceans continue to warm in the coming decades, they’ll go through a visual change too. Higher temperatures of seawater will affect the populations of phytoplankton—microscopic algae—creating algal blooms in some areas and die-offs in others, according to a study released recently in the journal Nature Communications.  In the tropics, that will mean deeper blues as phytoplankton struggles in the heat and begins to die, leaving behind emptier water. At the poles, water will become greener with the rise of chlorophyll-rich phytoplankton populations. Researchers modeled predicted climate change through the year 2100 and they think by then, 50 percent of the planet’s ocean water will have shifted in color. It’s becoming readily apparent that by the end of this century, Earth will look quite a bit different than it does today.

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