Science & technology | The hitch-hiker’s guide to the Pacific

A long-term natural experiment hints at how species disperse

The aftermath of a tsunami spreads species across an ocean

|WASHINGTON, DC

THAT SPECIES might spread overseas by hitching lifts on floating vegetation is an idea going back to Charles Darwin. It is a plausible thought, but hard to test. A test of sorts has, however, been made possible by the tsunami that struck the Pacific coast of Japan in 2011, in the wake of a submarine earthquake.

This article appeared in the Science & technology section of the print edition under the headline “The hitch-hiker’s guide to the Pacific”

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