count the circils on his or her back
There is no way to tell how old a sea turtle is or even how long they live. The best estimate is that they can be up to eighty years old when they die. There are no rings or lines on a turtle shell that increase with age to tell how old the turtle is. A typical sea turtle reaches breeding age around 25-30 (for loggerheads). After a turtle does become an adult, it is anyone's guess how old it is.
A lot of people would tell you that you know how old a turtle is by counting the boxes on its shell, but it isn't true. I guess the only way to know is to know when it was born. To check it out yourself, you can go to www.yourturtle.wetpaint.com:)
By size mostly. That depends on what type of terrapin you are referring to, of course.
A yellow back turtle or yellow-bellied slider is an aquatic terrapin which has evolved to live in warm waters. There is no definitive way in determining how old it is and the rings on its shell are not conclusive in gauging its years of age.
You first cut the turtle. Count the number of rings. Multiply by 17. Thats it.
You could tell the age of the tree by the rings by counting the rings.The ring equal one year. example: If 500 rings are in the trunk then it will be 500 years.
You count the rings on one of his circles on his back.
No you can not tell by the rings on its tail, it is just simply there you can tell the age by the size!
unless you had it from the time he was born, you can't tell. counting the rings on it's shell DOES NOT work.
you tell how old a tortoise by counting the square like things on its shell.Correction: - The above information is incorrect, it is an old wives tale. In short, unless you know when a tortoise was born it is almost impossible to determine it's age.
Cut it in half and count the rings.
Could the rings on the inside of the tree, the more rings, the older it is.