Meet the Australian #MaryRiverTurtle a.k.a. the Green Punk Rock turtle - just another animal our insatiable appetite for exotic pets has put on the #EndangeredAnimal list. (Please don’t buy turtles and reptiles for pets) That’s algae growing on its head. Weird fact: it can breath underwater through its cloaca, an orifice used by reptiles for excretion and mating.

#MaryRiverTurtle
This Punk Turtle That Breathes Through Its Butt Is Now Officially Endangered
It's all our fault.
"Many Edge reptiles are the sole survivors of ancient lineages, whose branches of the tree of life stretch back to the age of the dinosaurs."
When it comes to the Mary River turtle, this is especially true. No other turtle in the world is even closely related to it, because it diverged from modern turtles around 40 million years ago."
https://www.sciencealert.com/mary-river-turtle-green-hair-endangered-list