rocketright wrote:Hmm, She may be egg bound... You should get a nesting area ready for her, it should be about 10 inches deep with soil and put her in there for a couple hours, if she has eggs and has no egg laying area it can be fatel... They can hold their breath for a couple hours. She may have a respitory infection, if you need a vet I can get one for you... Locate one.
Sorry but I have to respectfully disagree with all of the above for the following reasons:
1.) If she is egg bound, she will FRANTICALLY try to get out of tank, not sit quietly on the bottom underwater. It will be loud & extremely hard to ignore her if she needs to lay eggs. I have gone thru this with mine in the past & the noise is enough to wake the dead! Also, a female needs to be around 5" shell length or longer in order to lay eggs.
2.) When they are underwater for long periods of time, they are not necessarily holding their breath. Turtles can actually take water in thru their butt ("cloaca") and filter the oxygen out of the water. So while they may not be "breathing with their lungs" underwater, they are still taking in oxygen from the water thru the cloaca.
3.) Lastly, if a turtle has respiritory illness ("RI") they actually open their mouth to breath ABOVE the water (like on their basking dock). Just sitting underwater for long periods of time doesn't mean it is RI. It is the "gasping for breath" when they are OUT of the water that is a sign of RI.