Wild Things: Life as We Know It

Butterflies, clicking antelopes, creatures of the deep and more

A study shows that cabbage white butterflies with their hindwings removed could fly as far and as high as before. (JoeLena / iStockPhoto)


Megaleledone setebos octopus
(Cheryl Carlin)
Researchers studying the origins of deep-sea animals analyzed the family tree of octopuses that live in total darkness. The eight-legged creatures evolved from a common ancestor that lived 34 million years ago in the Southern Ocean. Its closest living relative is the yard-long Megaleledone setebos, which still lives in Antarctica. Other species were carried to new habitats on deep-sea currents called the "thermohaline expressway."

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