“And if you give them good vibrations, they’ll, er, get the excitations. There are some tours in New Zealand, Merritt tells me, where guides will deliberately hit the water or cave walls with an inflated inner tube; in response, the field of living stars will double in brightness. Merritt can achieve the same effect in his lab by pressing a vibrating cellphone against the aquarium where his captive glowworms live. “They really brighten up intensively if they detect vibration,” he says. “I’m not sure of the function.””
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