All rights reserved. Recently marine biologist Dara Orbach presented some of the first research ever done on how dolphin genitalia fit together, making Weird Animal Question of the Week curious about how big animals manage the physics of mating underwater. The dolphin penis is fibro-elastic, meaning the erectile tissue is full of collagen and elastin and can emerge quickly. Whales have similarly speedy mating and dextrous penises, says Marah Hardt , author of Sex in the Sea. Male sharks internally fertilize females with one of their two sperm-transfer organs, called claspers. First, though, they need to get a grip on a female. Females are much more thick-skinned than males, enabling them to handle the onslaught. To get around that problems, the males literally go around it. These huge-shelled reptiles have cloacas, shared openings for reproduction and waste.
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All rights reserved. An image reconstructed from CT scans showing how the penis of the common bottlenose dolphin red fits within the intricate folds and turns of a bottlenose dolphin vagina. Thanks to a pressurized penis inflator and genitals flown in from across the U. In a word, swimmingly. She presented scans of two species of dolphins, as well as harbor porpoises and harbor seals, all produced using genitalia collected from animals that died of natural causes.
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A: Copulation is the most direct possible interaction between males and females, but we know so little about it largely due to the physical challenges of studying it, especially with underwater creatures. We do this by looking at tissue samples from animals that died of natural causes. We use whole penises and whole vaginas. A: Yeah. We found a way to inflate them so they would be the most close mimic of what a real intromission would look like. The bottlenose dolphin's vagina, seen here in gray, contains a number of intricate folds and flaps which the male's penis red must navigate if he is to deposit his sperm as close to the egg as possible. Is it going to be relatively simple? Or will there be these spirals?
Procreating is serious business in the animal kingdom, and Mother Nature has gone out of her way to cleverly ensure the survival of her many, many denizens. From sex organs with multiple heads to prodigious shafts exceeding an animal's own body length, here are 12 of the weirdest and often scariest animal penises on the planet:. But what makes this soft-bodied marine mollusk particularly different is its ability to grow a new penis within 24 hours. Sea slugs are "simultaneous hermaphrodites," meaning they possess both male and female genitals and use both during intercourse. Within 24 hours, the slugs regenerate the penises and are ready to do it all over again. North Carolina State University Researchers found a reproductive shaft equipped with four sharp hooks, which males use to grab onto resistant females during mating. It's definitely an "unpleasant looking genital barb," says Ian Chant at Geekosystem , but "when they're trying to break through the tissue that blocks their mates' genital pores, male mosquitofish are probably less than concerned with winning any beauty contests. Softshell varieties like the leatherback have penises that, when erect, extend to nearly half the animal's 8-foot body length. The endpoint culminates in a five-lobed head that discharges semen from four different branches think: Ridley Scott's Aliens franchise.