http://www.animalplanet.com/tv-shows/call-of-the-wildman/lists/3-turtles-breathe-without-a-diaphragm/

But turtles don't have a diaphragm, which is all well and good, since the rigidity of their shells would prevent their ribs, which are connected to them, from ...

https://www.nature.com/articles/ncomms6211

Nov 7, 2014 ... Instead, turtles have a unique abdominal-muscle-based ventilatory apparatus whose evolutionary origins have remained mysterious. Here we ...

https://www.sciencedaily.com/releases/2014/11/141107091449.htm

Nov 7, 2014 ... In order to be able to breathe in this inflexible casing, tortoises have a ... the aid of such a sling – even though it did not yet have a solid shell.

https://www.northcountrypublicradio.org/news/story/13939/20120607/natural-selections-turtle-anatomy

Jun 7, 2012 ... Turtles breathe backwards; that is, when they relax their diaphragms, they ... has a lot to do with their anatomy,” said Curt Stager of Paul Smith's ...

https://en.wikipedia.org/wiki/Turtle

Turtles are diapsids of the order Testudines (or Chelonii) characterized by a special bony or .... Some turtles do not have horny scutes; for example, the leatherback sea turtle and the soft-shelled turtles have shells covered with leathery skin instead. ... abdominal muscles, and/or a diaphragm) attached to an internal rib-cage ...

http://www.infoturtle.com/turtle-anatomy/

With keratin turtle shell has amazing regenerative abilities. ... Turtles do not molt their skins all at once, as snakes do, but continuously, in small pieces. ... allowing these muscles to function in much the same way as the mammalian diaphragm.

https://www.ck12.org/book/CK-12-Biology/section/19.4/

They include crocodiles, alligators, lizards, snakes, and turtles. The reptile ... Unlike amphibians, reptiles do not have a larval stage. .... What is a diaphragm?

https://vcahospitals.com/know-your-pet/turtles---aquatic---owning

In the wild they do hibernate at the bottom of ponds and shallow lakes in the cool winter ... Turtles have no diaphragm; they draw air into and out of their lungs, ...

https://www2.padi.com/blog/2014/12/04/10-more-fascinating-facts-about-the-majestic-sea-turtle/

Dec 4, 2014 ... Sea turtles have special glands near their eyes that removes excess ... to the sea can be treacherous, and the sea turtles that do make it to the ... Unlike most other vertebrates, turtles are able to breathe without a diaphragm (a ...

https://www.quora.com/Why-do-tortoises-have-no-lungs

Tortoises do not have a diaphragm and their ribs have become fused to their shell. They instead rely on other muscles to draw air into their ...