Sandbar sharks have internal fertilization and are viviparous, meaning they give birth to live young. The embryos remain in the uterus for 9 to 12 months until they are fully developed, during which time they receive nutrients from the placenta. When the pups are born they have the same physical features as adults, but they are smaller. It takes about 8 years for sandbar sharks to mature.
- Carrier, J., J. Musick, M. Heithaus. 2004. Biology of Sharks and their Relatives. Boca Raton, FL: CRC Press LLC.