Even these sand crabs are nervous at the thought of a Henslow swimming crab invasion. Image credit: Balaji.B/Flickr

Named after John Stevens Henslow, the Cambridge professor who gave up his place on the Beagle to Charles Darwin, Polybius henslowii—or the Henslow swimming crab—finds it most comfortable in the warm waters off the coast of Portugal.

Warming ocean currents, however, have allowed the active, swimming, predator to migrate north—and the impact of its presence is beginning to ripple t… Read the full story on TreeHugger
Credits to:TreeHugger

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