Staying still or going hunting: Which works better for a hungry ocean microbe?

For the kinds of animals that are most familiar to us -- ones that are big enough to see -- it's a no-brainer: Is it better to sit around and wait for food to come to you, or to move around and find it? Larger animals that opt to sit around aren't likely to last long. But for bacteria out in the ocean, the question is a far more complicated one.

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