In Ecuador and elsewhere in the region, copper- and gold-mining operations are deforesting habitats and polluting streams that the glass frog tadpoles need with sediment and toxins such as mercury ...

But when northern glass frogs wake up and hop around in search of insects and mates, they take on an opaque reddish-brown color. “When they’re transparent, it’s for their safety,” said ...

Glass frogs can be found in the rainforests of Central ... it uses its transparency and unique eye structure to camouflage in ...