Did you know that Turtles breathe through their butts?

Realy they do :)

http://www.straightdope.com/columns/011116.html

"Although basically air-breathing, many aquatic
species have developed ways to pick up oxygen even
when submerged. Of these the most remarkable, which
some turtles share with dragonfly nymphs, sea
cucumbers, and certain televangelists, is the
ability to breathe through one's butt. You've heard
the expression ‘Blow it out your after regions?’
It's no mere figure of speech. Many species have a
pair of sacs (bursae) opening off the cloaca
(combined digestive and urogenital chamber). These
are heavily vascularized to facilitate the uptake of
oxygen..."

http://www.eckerd.edu/turtles/testudines.lichen/testudines.lichen.html
"..Many turtles augment gas exchange at the lungs
with gas exchange in the throat or in the cloaca."

http://www.eckerd.edu/turtles/testudines.lichen/testudines.lichen.html
"..For this reason, many turtles breathe
spontaneously by extending their head and neck up
and forward while thrusting their forelegs backwards
to encourage air movement into their lungs."