This endangered turtle sports a mohawk—made of algae

This story appears in the September 2020 issue of National Geographic magazine. Hatchlings known as “penny turtles” or “pet-shop turtles” were sold in Australian stores in the 1960s and ’70s. Aussie reptile expert John Cann couldn’t figure out the turtle’s species or origin for years—until he saw one in its only native habitat, the Mary River in Queensland. That was just the first of many intriguing discoveries about Elusor macrurus— the Mary River turtle, listed as endangered by the IUCN and other conservation groups. It’s one of Australia’s largest freshwater turtles, topping out at nearly 18 pounds in a 17-inch-long shell. It’s thought to have split from other species about 40 million years ago and is the only species in its genus. It may live to be 100 years old and not start reproducing until it’s 20. And when E. macrurus does breed, the male deploys one part of a multipurpose tail that he also uses to void waste—and to breathe. The tail’s gill-like structures allow the turtle to stay submerged for up to two and a half days without surfacing. “The bum-breathing trait attracts a lot of attention,” says conservationist Marilyn Connell. As a leader of the Mary […]

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