Just as an example, we are currently at lady bird lake in Austin, tx and saw a turtle on the bank. It turned out to be a red eared slider turtle. The app informed us that they can breathe through their bottoms! Who knew!
i thought this was more common than it is, but it's also not rare. Claude:
Around a dozen turtle species globally can breathe through their cloacas (rear openings), with roughly half living in Australian rivers. The main species that have truly mastered this ability include the Fitzroy River turtle, Mary River turtle, and white-throated snapping turtle. Additionally, some freshwater turtles like Blanding's turtle use a more limited form of cloacal respiration during hibernation when trapped under ice for extended periods.
The Fitzroy River turtle is particularly impressive, obtaining up to 70% of its oxygen needs through cloacal respiration and staying submerged for up to 21 days. The white-throated snapping turtle can get nearly 70% of its oxygen this way as well. These turtles have specialized structures called cloacal bursae—sac-like organs with densely packed papillae (small blood vessel-rich structures)—that allow oxygen from water to diffuse directly into their bloodstream.
i thought this was more common than it is, but it's also not rare. Claude:
Around a dozen turtle species globally can breathe through their cloacas (rear openings), with roughly half living in Australian rivers. The main species that have truly mastered this ability include the Fitzroy River turtle, Mary River turtle, and white-throated snapping turtle. Additionally, some freshwater turtles like Blanding's turtle use a more limited form of cloacal respiration during hibernation when trapped under ice for extended periods. The Fitzroy River turtle is particularly impressive, obtaining up to 70% of its oxygen needs through cloacal respiration and staying submerged for up to 21 days. The white-throated snapping turtle can get nearly 70% of its oxygen this way as well. These turtles have specialized structures called cloacal bursae—sac-like organs with densely packed papillae (small blood vessel-rich structures)—that allow oxygen from water to diffuse directly into their bloodstream.