Turtle soup is Chinese delicacy made from the flesh of the turtle. Fresh (soft-shell) turtle meat is brewed in a mixture of Chinese herbs till the herbs' essence are fully immersed in the turtle meat. Turtle meat is highly sought for its dense collection of collagen. Its fats has also been said to enhance blood circulation.
According to Chinese folklore, turtle eggs are supposed to be aphrodisiacs and in specialty shops, these are also served in the soup.
If it makes you feel any better, the turtles used to make this soup is actually a Chinese soft shell turtle cultivated primarily to be food.