Amber can be a veritable treasure trove of ancient animals and insects, but it most commonly captures creatures that lived in forests – understandable, given the stuff starts life as tree sap. But now ...

Sea butterflies are snails that have inverted themselves. Instead of using their flesh (via a foot) to crawl on the sea floor, they turned upside down and make their protruding bodies into “wings.” ...

Sea butterflies are graceful little snails that use their protruding bodies as wing-like lobes to “fly” through the water instead of as a foot to crawl along the ground. Scientists writing in the ...