The Hidden World Moves

Hidden worldNikon has handed out awards in its second annual Small World In Motion competition--a contest for the best video of the world we can't see with our naked eye.

Here are a few of my favorites...

A tiny animal called a rotifer lives inside a tube attached to a plant. It beats hairs called cilia to pump food into the tube, where it can be ground up by the rotifer's jaw-like structures.

Here, kidney cells grow in a dish into the distinctive branched anatomy that lets kidneys filter waste out of blood.

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 Phenomena is a  gathering of spirited  science writers who take delight in the new, the strange, the beautiful and awe-inspiring details of our world. Phenomena is hosted by Jamie Shreeve, Executive Editor for Science at National Geographic magazine, who invites you to join the conversation. Follow on Twitter at @ngphenomena.

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