Men freeze sperm for a variety of reasons. However, if a couple were having intercourse in the water, pregnancy would be just as likely because the sperm would enter directly into the female reproductive tract. Reviewed by Judith Marcin, MD. However, in chimpanzees, a species in which females mate with more than one male in Sperm survival in vagina brief time, the semen coagulates into a compact plug resembling that of rodents Jensen-Seaman and Li2 ; Kingan et al. What role does sperm motility play in pregnancy?