Butterflies aren't born as we recognize them– they go through a process called metamorphosis to change from a caterpillar to a chrysalis to an adult butterfly. See live butterflies, moths, and chrysalises at the American Museum of Natural History's Butterfly Conservatory, opening October 7, 2017. | American Museum of Natural History

887K views · 6.2K reactions | As a mayfly larvae emerges out of its shell, this will be the most important—and only—day of its adult life. | National Geographic | Facebook