PHOTOGRAPHS BY JOEL SARTORE, NATIONAL GEOGRAPHIC PHOTO ARK
Romeo, the frog formerly known as the world’s
loneliest, has joined more than 9,000 other species in
National Geographic’s Photo Ark , an effort to document every
captive species on Earth before they go extinct.
So has his potential mate, Juliet, whose recent discovery in the wild
has sparked a sliver of optimism that the critically endangered
Sehuencas water frog can survive.