SPERM FACTS
A single human male ejaculation releases about half a teaspoonful ( 2.75 ml) of semen containing anywhere between 180 to 400 million sperm.If this number falls below about 20 million sperm, a man is considered clinically infertile.
A single sperm is about 40 microns (0.0016 inches) long and carries 23 chromosomes. Sperm swim at about 30 inches per hour and can survive in the female reproductive tract for up to three days.