average human ejaculation
An average human ejaculate contains about 180 million sperm (66 million/ml), but some ejaculates contain as many as 400 million sperm. Both quantity and quality of the sperm are important determinants of fertility. A man is considered clinically infertile if his sperm concentration falls below 20 million/ml semen.
There are male and female sperm - the females are slower, but stronger, while the males are faster, but weaker. Average volume of semem per ejaculation is 1 teaspoon, which equates to about 200-500 million of those little guys in the average amount of semen produced each time you release.