Nature curiosity: Why and how do turtles breathe with their butts?

How do turtles breathe while they are underwater all winter? By breathing through their butts, so to speak.

Reptile and Amphibian Hibernation - Hamilton Conservation Authority

A gente pode remover a tartaruga de dentro do seu casco sem matá-la? - Quora

Forest Preserve District of Will County

The secret to turtle hibernation: Butt-breathing

The secret to turtle hibernation: Butt-breathing

Do Fish Drink? Office for Science and Society - McGill University, fishes

Como uma tartaruga pode viver tanto em uma escala de centenas de anos? Seu mecanismo lento está fazendo isso? - Quora

10 Tremendous Turtle Facts

What's a curiosity about turtles? - Quora