Dichorionic twins are a type of twin pregnancy where each twin has its own separate placenta and amniotic sac. This occurs when two eggs are fertilized by two sperm, resulting in fraternal twins or when a single fertilized egg splits into two embryos very early in development. Each twin develops independently, which can reduce the risk of complications compared to other twin types. Dichorionic twins are often identified through ultrasound during early pregnancy. Because they have separate placentas, they typically have a lower chance of sharing blood supply or nutrients, which can lead to complications seen in monozygotic twins. This separation generally allows for healthier growth and development for each twin.