Credit: Dr. Jesse Delia, American Museum of Natural History.
The transparent glassfrog.
During the day, the glassfrog sleeps on vegetation, where it is effectively camouflaged from predators due to its transparent tissues.
Red blood cell distribution in the glassfrog. Photoacoustic microscopy images that show the circulating red blood cells within a glassfrog while asleep and under anesthesia (which results in blood distribution throughout the body).