Some people who are intersex, such as some of those with androgen insensitivity syndrome, outwardly appear completely female or male, frequently without realizing they are intersex.

Other kinds of intersex conditions are identified immediately at birth because those with the condition have a sexual organ larger than a clitoris and smaller than a penis.

Sequential hermaphroditism is common in fish (particularly teleost fish) and some jellyfish, many gastropods (such as the common slipper shell), and some flowering plants.

While some sequential hermaphrodites can change sex multiple times, most can only change sex once.

In these groups, hermaphroditism is a normal condition, enabling a form of sexual reproduction in which either partner can act as the "female" or "male".

For example, the great majority of tunicates, pulmonate snails, opisthobranch snails and slugs are hermaphrodites.

According to Ovid, he fused with the nymph Salmacis resulting in one individual possessing physical traits of male and female sexes; Alexander ab Alexandro stated, using the term hermaphrodite, that the people who bore the sexes of both man and woman were regarded by the Athenians and the Romans as monsters, and thrown into the sea at Athens and into the Tiber at Rome.

This contrasts simultaneous hermaphrodites, in which an individual may possess fully functional male and female gonads.Thus, testicular and ovarian tissues will both be present in the same individual.Hermaphrodite is used in botany to describe a flower that has both staminate (male, pollen-producing) and carpellate (female, ovule-producing) parts.When spotted hyenas were first discovered by explorers, they were thought to be hermaphrodites.Early observations of spotted hyenas in the wild led researchers to believe that all spotted hyenas, male and female, were born with what appeared to be a penis.Hermaphroditism is also found in some fish species and to a lesser degree in other vertebrates. Historically, the term hermaphrodite has also been used to describe ambiguous genitalia and gonadal mosaicism in individuals of gonochoristic species, especially human beings.