Not many creatures on Earth can pull off keeping a pride of curious lions at bay. But lions don’t want to get their soft noses pinched by a crab’s forceful claws any more than we would. The video ...

They have a few traits that make them, as conservation biologist Joe Roman put it to The New York Times, “a perfect invader”.

“These Mukilteo beaches represent a location where Dungeness crab molt shells have accumulated many times in the past on the shoreline,” he wrote. “Crabs of certain size categories and sex ...