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Earliest medium of sex cell transmission One of the main problems in bisexual reproduction is how to get the sex cells together. Or - looked at another way - the whole business of sex is so pleasurable for human beings that the main problem is to keep the sex cells apart, i.e. to achieve effective contraception. In its earliest stages biological evolution managed to contrive a variety of means whereby the "male" and "female" components could come together for reproduction: the penis and vagina arrangement was "late" in the evolutionary scale. The earliest species lived in water and simply released their sex cells - the earliest equivalents of "sperm" and "egg" - to float about. Some of the cells had cilia, moving hairs, to propel them along. From The Illustrated Book of Sexual Records. © 1974, 1982, 1997-2001 G.L. Simons Back to Home Page Other Categories   Human Physiology     Sexual Techniques and Peformance   The Arts Abberant Sex and Deviations Animals and plants Contraception and Castration Sexology Prudery, Superstition and the Law Looking for a "hot" date? Something naughtier? ABC Fantasy Dating Hot videos, DVDs? All tastes, and streaming video! Try Adult Videos & DVDs World Sex News On nudity, pornography Erotica, Orgasms, Lesbians Click here See Also World Sex News Erotic Awards Sex Maniacs Ball Sexual Freedom Coalition Encyclopedia of Unusual Sex Practices Catastrophism!

Search: Animals and plants First plants to reproduce bisexually Most primitive plant conjugation Earliest medium of sex cell transmission Most primitive hermaphrodite Siamese twins Commonest instances of sex change [i] Most primitive sex change Best known example of sex change [i] Only instances of sex role reversal Most numerous sex organs in a species [i] Largest penis in animal kingdom Oddest penis Fastest erection Most copious ejaculators Largest mammalian litter Most convincing female orgasm Largest participants in group sex Most primitive kissers Longest kissers [i] First virgin birth amongst domestic fowl [i] Least expected masturbatory activity First animal love songs Longest love songs [i] Most complex insect love songs Most vaginas in one animal Most unusual mammalian vagina Longest clitoris Largest mammary glands Most coital thrusts by howler monkeys Least coital thrusts by howler monkeys Longest sperm Longest vagina [i] Most nipples [i] Largest animal testes Longest mammalian intercourse Longest coital session [i] Shortest coital session Shortest coital session amongst insects Most sexually active sheep [i] Nymphomania first induced in cattle [i] Most sexually adventurous [i] Most vicious form of intercourse [i] Most remarkable coital mechanics