Posted: May 20, 2013We're consistently impressed by the variety of biodiversity out there, but these sea butterflies are really something else.
The creatures, also known as pteropods, were photographed by Karen Osborn, a research zoologist with the Smithsonian Institution. They're related to snails and use a muscular foot to swim through the ocean.
Osborn found all of the pteropods off the coasts of Mexico and California and photographed them in a shallow tank of clear water to "inspire interest in these weird, wild animals," she told Smithsonian Magazine.
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