Can Worms Create Their Own Imaginary Oceans? Can Oysters?

What happens if you take a beach creature, a little worm, or an oyster, and move it to an aquarium far from the sea? Will it still imagine tides? Yes, it will. But whose tides will wake it up every day, get it moving? The tides back home? Or the tides ? even if there aren't any ? in its new time zone? A puzzle.

Source: http://www.npr.org/blogs/krulwich/2013/08/23/214815919/can-worms-create-their-own-imaginary-oceans-can-oysters?ft=1&f=1007

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