Red and white sea slugs that roam the warm waters of Southeast Asia just may be the envy of the animal world, given their ability to discard and re-grow a penis again and again. The Chromodoris reticulata is a hermaphroditic slug that, once mating is complete, can cast off its penis into the water. Twenty-four hours later, a new, fledgling penis unfurls from inside the slug, replacing the discarded one.
Japanese biologists reported in the Royal Society journal that these sea slugs are the only known animal to have a “disposable penis.” Each slug does in fact have both male and female genitalia, making them hermaphrodites. When mating with another slug, they fertilizes each other’s eggs in a sort of dual copulation, both storing the other’s sperm to inseminate their eggs.
After the deed is complete, the slugs then discard their penises, which prompts their bodies to begin growing the replacement penis. Around one day later, the new one emerges ready to inseminate its next partner.
What’s more, the sea slug’s penis has sort of a Darwinian streak to it. Biologists found that the shaft of the penis is covered in backward pointing spines that act as a cleaning brush. The spines remove the stored sperm of the slug’s previous partners, displacing their sperm to ensure their own is used for insemination.
Other animals, like starfish, can regenerate broken parts, but these red and white sea slugs are the only ones that can re-grow their manhood.
Via Phys Org
- 3 Comments >
- 3 Comments >
- 8 Comments >
15 Comments >
Edith Macefield: The 84-Year-Old Who Refused a Million Dollars and Forced a Shopping Mall to Build Around Her House
171 Comments >
19-Year-Old Develops Ocean Cleanup Array That Could Remove 7,250,000 Tons Of Plastic From the World's Oceans
- 100 Comments >
- 34 Comments >
- 99 Comments >
- 2002 Comments >
411 Comments >
BACK TO SCHOOL GIVEAWAY: Enter to Win a HP Pavilion dv6 Laptop and Green Prize Package (Worth $1155!)
- 391 Comments >
- 366 Comments >
- 350 Comments >
283 Comments >
LAST CHANCE: Enter to Win a Voltaic Laptop-Charging Solar Backpack Filled With Green School Supplies (Worth $500)!
279 Comments >
GIVEAWAY: Enter to Win a Sloan AQUS Grey Water Toilet System That Recycles Your Sink Water (Worth $189)!
- 247 Comments >
240 Comments >
LAST CHANCE: Enter Inhabitat's Back To School Contest to Win $250+ of Green Goodies Including a Voltaic Solar Backpack (Worth $129)
- 228 Comments >
- 221 Comments >
- 187 Comments >
Namba Parks was conceived when Osaka Stadium closed down, presenting a great redevelopment opportunity for a new commercial district right next to the Namba Train Station, which is just one stop away from Kansai Airport. Since it's one of the first placesREAD MORE >
Top image: A child is put to work at a militia-run mine in Watsa. © Marcus Bleasdale/National Geographic Captured during a 2004 visit to the war-torn Democratic Republic of Congo, Bleasdale's images "tell the story of the country's mineral resourceREAD MORE >
You've all heard the tired mantras about changing your lightbulbs and recycling at home in order to save the planet - are you yawning yet? Many consumers think that going green is a gesture of self-sacrifice that often comes at great expense and inconvenienceREAD MORE >
Did you know that there are wolves living near you in almost every state in the country? Sadly most of these wolves are not living in the wild, but in wolf sanctuaries, which are conservation organizations set up to protect them and help grow their populationREAD MORE >
BANANAS You might have heard that bananas are favored by athletes because they contain potassium and it's that same reason that makes them great hangover cures. When you're hungover, your body has lost a lot of potassium that needs to be replenished, so eatingREAD MORE >
Images © Graham King “The shopping cart tree symbolizes both generosity and abundance, as well as acknowledging those less fortunate where their whole world may be housed in a cart. We see shopping carts every day and take them for granted. IndividuallyREAD MORE >
TIP 1: Wrap Your Home in Insulation - "The More, The Better!" Proper insulation is probably the most important factor you can control in creating an energy-efficient home. I always say insulation is like chocolate, the more you have, the better! On average,READ MORE >
While conjuring up comfort in the home seems like a basic principle, it’s a far more complex process for architect & remodeling guru Sarah Susanka, who believes that comfort can significantly influence the sustainability of your personal abode. WithREAD MORE >
Two architects, Jos Burger and Wouter Keijzer of BK. Architecten, in charge of the renovation of the old church decided to preserve the atmosphere of the existing place with a spatial intervention that preserves its historical value. The three new floors wereREAD MORE >
For centuries, the Dutch have manipulated the landscape to move water away from their dwellings. Instead of battling the elements, Netherlands-based firm Waterstudio just announced plans to construct the world's first floating apartment complex in 2014! TheREAD MORE >
The Biomimicry Manual: What can We Learn About Resilience, Weight Loss, and Kidney Disease from the Grizzly Bear?I'm off to the wilds of Montana this week, doing some in-person, up-close biomimicry research, and I've got my fingers crossed I'll see a grizzly bear. But you know, over there, not over here. With five inch long claws, massive muscular shoulders and forearms,READ MORE >
INHABITAT: How does the term Colorfast describe your latest show? R Nelson Parrish: The term Colorfast originally is a textile industry term derived at the beginning of the last century. It defines how a color cannot fade, wash out, or be diluted over time,READ MORE >