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A little wonder, every day

Some turtles take up oxygen through the cloaca

Титульна AI-згенерована ілюстрація / AI-generated cover illustration. A Fitzroy River turtle swimming in its Queensland river habitat.
Fitzroy River turtle underwater in its river habitat.
Fitzroy River turtle in an aquarium.
AI-generated educational cutaway showing paired cloacal bursae and water flow beneath a turtle's tail.
AI-generated conceptual scene linking air breathing at the surface with underwater cloacal gas exchange.
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Титульна AI-згенерована ілюстрація / AI-generated cover illustration. A Fitzroy River turtle swimming in its Queensland river habitat.

Listen to fact0:00 / —

Some freshwater turtles can take up part of their oxygen from water through the cloaca, a shared rear chamber that opens beneath the tail. In species with well-developed cloacal bursae, water circulates through them and oxygen passes into the blood. This supplements lung breathing and helps them stay underwater longer; not all turtles use this method.