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Evolution

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spiny orb weaver

TIME WARP  This spiny orb weaver and two of its relatives may have evolved an impossibly short circadian clock by spinning their webs before dawn to avoid predators.

Lord Howe stick insects

IT LIVES  Although darker than those found on Lord Howe Island, these stick insects, from nearby Ball’s Pyramid, are the same species.

pearlside fish

FISHEYE  Fish called pearlsides (Maurolicus muelleri, shown) have eyes adapted to see well in both the murky depths of the ocean and in brighter light at the surface.

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