An image taken under a microscope shows two phytoplankton, one at bottom left a fraction of the size of the one in the center of the image. The single-celled organisms swell to the larger size, allowing them to rise up the water column in the ocean.
Genetics

How tiny phytoplankton travel long distances up the ocean

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It’s one of the most massive migrations on Earth: a huge biomass of tiny plankton traveling from the deep sea […]