Happy Turtlesday! Today's awesome turtle specimen is the Mary River turtle (Elusor macrurus), and that totally punk rock hairdo is made of algae! The Mary River turtle is found in the Mary River in Queensland, Australia, and is an endangered species that comes from a very old lineage of turtles. Mary River turtles use bimodal respiration, so they can absorb oxygen while underwater, but they also come up to surface to breathe air. The tail of the Mary River turtle can make up to two-thirds of its carapace. With it's proportionally small head and large hindfeet, this one of the fastest swimming turtles.