Why some frogs are called glass frogs?

The glass frog is a tiny frog that gets its name because of the translucent skin on its underside that allows you to see its inner organs, right down to its beating heart! This translucent skin makes the glass frog very difficult for predators to spot, as it almost becomes a part of the leaf it is sitting on.

Glass frogs are very small, the average one being between 1.4 centimetres and 3 centimeters, and they generally live in the rainforests of Central and South America. They are at a high elevation, so these rainforests are called cloud forests as the canopy is wrapped in cloud – and this is a further reason for which the glass frog’s transparency is very useful. Although they live by streams and rivers, almost all glass frogs live in trees, only coming lower down to breed.