Wikipedia has come under fire for allowing graphic videos and photographs on its articles, with some the site's editors agreeing some pages are becoming pornographic.
Child protection campaigners say graphic sexual content appears on many Wikipedia entries, displayed without any warning or age verification.
Videos of masturbation and ejaculation as well as photos from "hardcore" porn films can be found within the online encyclopedia's pages.
Wikipedia relies on users to provide content - abandoning formal editing and censoring processes - and as such the accuracy and appropriateness of its articles are continually in question.
One Wikipedia editor, who has been been trying to have an 18-video of a man ejaculating removed, has told News Ltd much of Wikipedia's contentious content is "overkill".
"A video of a woman giving herself a breast exam would be educational and ... a video of a man giving himself a testicle exam would be educational in relevant articles," the user says.
"Images alone are not enough for those processes, but a video of a man ejaculating - when there is an image that shows it stage by stage - is not needed."
Head of child protection agency Childwise, Bernadette McMeniman, says while she supports sex education, displaying sexualised images in a freely available online encyclopedia "crosses the line".
"Does that mean that when you type in 'murder', you should actually see someone murdering someone else?" she told News Ltd.
"Do we really need to see a woman masturbating on Wikipedia? Do we really need to see so many seconds of ejaculation?"
Many "obscene" images have been removed on the back of arguments that they do not contribute to an article and appear to be shown for titillation, not education.
On a discussion page, one user complained a photograph of female genitalia was too sexualised for the site.
"I don't think that (Wikipedia) is the place for this ... even in medical school, you deal mostly with diagrams - not French manicured nails."
Wikipedia's policy is that "no censorship" is applied to the online encyclopedia, except in cases of article vandalism.
"Obviously inappropriate content (such as an irrelevant link to a shock site, or clear vandalism) is usually removed quickly," the site says.
"However, some articles may include objectionable text, images, or links where they are relevant to the content - such as the articles about the penis or pornography."
