The so-called Devils hole pupfish survives within one of the driest places in the world, in the heart of the Mojave desert in the US.
Each fish is less than one inch-long (2.5cm), and perhaps fewer than 50 individuals survive.
Even more remarkably, every member of this species has existed in the wild, since they first appeared thousands of years ago, within an area no bigger than the living room in your house.
This is rather fascinating: apparently, the Boquila trifoliolata vine is capable of mimicking the leaves of other plants in its vicinity. Thus far, no one has been able to explain exactly how it achieves this feat.