![]() Why do your gym clothes stink even after you've washed them? Scientists reveal why some fabrics trap in the.Oldest Neanderthal cave engravings ever are discovered in France - and they date back 75,000 YEARS.Is THIS the legendary HMS Triumph? Diver claims to have discovered wreck of top-secret WWII sub 81 years.The findings will be presented at the American Association of Anatomists in Chicago later this month. The team found there were particular parts of the vagina that were stimulated during sex which could help captive breeding programmes. ![]() 'Additionally, cetaceans do not have appendages to hold each other in place during copulation, so the angle of approach is critical'. 'Salt water is lethal to cetacean sperm, and females are expected to have adaptations to keep salt water out of their reproductive tracts', she said. 'The penis is extruded prior to copulation, meaning there are hydrodynamic drag forces acting on the penis that likely influence is structure and shape', said Dr Orbach. The dolphin penis contains a large proportion of tough and elastic fibres instead of spongy erectile tissue. 'Whales, dolphins and porpoises have unusual vaginal folds, spirals and recesses that the penis and sperm must navigate through to successfully fertilise the egg', she said. 'While it may seem intuitive that the penis fits well into the vagina during copulation, the biomechanics and details of the anatomical fit can be quite complex and have seldom been explored,' said Dr Orbach. Most research on genitalia has focused on the penis alone but this study looked at how the penis and vagina fitted together. Scientists simulated sex and used computed tomography (CT) scans to visualise how deeply the penis penetrates the vagina and where the two touch (stock image) 'The deeper the male is able to extend his penis within the vagina, the shorter a distance his sperm must travel to reach her egg', Orbach told MailOnline. ![]() Researchers found that there was an optimal position for the vagina and penis to fit together which varied with overall body positioning. They also created silicone models of the interior of the dolphin vagina to explore how its shape might have co-evolved with the shape of the male penis. Orbach's team examined the reproductive tracts of dolphins, porpoises and seals that had died naturally in order to find out more about their sex lives.Īfter blowing up the genitalia they used computed tomography (CT) scans to visualise how deeply the penis penetrates the vagina and where the two touch. 'Is it play? Is it working out hierarchies? Is it establishing dominance? Is it learning? There could be many functions of sex.' 'By looking at how the genitals align, we can now say certain body positions are more likely to lead to successful fertilization than others, which might be for purposes other than reproducing,' Dara Orbach, a marine mammologist at Dalhousie University in Halifax told Science. They also have sex all year round even when they can only conceive for certain periods of the year. My best wishes to you all, and hope you find what you are looking for here.Marine mammals have particularly interesting sexual intercourse as they must contend with some unusual constraints, such as making sure sea water does not enter the vagina.ĭolphins, in particular, have strangely fascinating sex lives due to their elaborate vaginas and a unique type of penis that is almost always erect.Īs part of the study, researchers wanted to find out how often dolphins have sex for 'fun'.ĭifferent species also use various sexual positions. I know that being a student, nowadays, isn't a easy task, so we will try to post about internship programs, congress, and whatever possible to help us in our academic life.įor an "Other reddits you might like" section: The objective is to create a place where every single person who cares about the sea (marine biologist or not), can share news, papers, images, opinions, ideas, questions, and everything related to this topic. For the official subreddit post about the general questions about becoming a marine biologist, internship experiences, and other resources, click here to see the post.
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