Photo: Climate Change Hitting the Sea's Little Guys Too

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Some of the basic rungs of the marine food chain—including sea urchins (left) and pteropods or "sea butterflies" (right)—are facing pressure from warming, increasingly acidic oceans, new research suggests.

The findings hint at the possibility of a disastrous collapse of the marine food chain as global climate change continues.

Photographs courtesy Gretchen Hofmann

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