The Thermohaline Circulation
Where and what is it, that will I tell you about.
A butterfly with transparent wings? Surely not. Yet there is a species that exhibits this trait. Take a close look at the incredible Glasswing, an enchanting species that confounds science.
This is no Muppet, it is a Poison Dart Frog. Formerly called the Poison Arrow Frog, native to South and Central America. Brilliantly colored and patterned! But touch not these frogs, for they are death. They secrete a toxin that can make predators and people ill if they tough them. Some varieties are so toxic, a touch or taste can stop the heart.