"Oceans envelop three-quarters of our planet’s surface. The survival of three billion people depends on their incredible bounty. Only now are we discovering how the ocean’s largest inhabitants are helping to enhance this. [...] When phytoplankton use up all the nutrients in the water, this vital growth goes into decline. But nature provides an unexpected lifeline, in the form of whale excrement. Whales excrete near the surface, releasing huge amounts of nutrients."
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