This is not a geode. It's an animal. An apparently delicious animals with clear blood, whose body is accumulates surprisingly large amounts of a rare metal used to strengthen steel.
This is Pyura chilensis—an immobile ocean creature. Besides the other traits I mentioned, P. chilensis is also capable of both sexual and asexual reproduction. At the Running Ponies blog, Becky Crew explains the results of a 2005 study that detailed the creature's breeding habits for the first time.
The results showed that P. chilensis is born male, before becoming cosexual – having both male and female gonads – in its adolescence as it increased in size. The researchers also found that given the choice – that is, if situated around other individuals – these organisms prefer to breed via cross-fertilisation, writing, “Given that more events of natural egg spawning followed by successful settlement and metamorphosis were recorded in our paired specimens and in our manipulated cross trials … it appears that cross-fertilisation predominates in this species.”
Manríquez and Castilla also found that a greater number of fertilised eggs resulted from the paired specimens, which suggests that cross-fertilisation, or reproducing with another individual, predominates because it is more effective. This assumption was strengthened by the fact that individuals that had cross-fertilised before being put in isolation took at least two months before successfully producing offspring via selfing. However, they were careful to note that while cross-fertilisation was preferred, selfing did not produce inferior offspring. “No perceptible differences in fertilisation, settlement and metamorphosis success among self and outcross progeny were found,” they reported. This suggests that when stuck alone in the ocean, selfing provides an advantageous opportunity for loner P. chilensis individuals to still pass on their genes.
Read the rest of Becky Crew's post to learn more about Pyura chilensis
I can’t believe I have to write this, but maybe jamming other people’s shit up your ass isn’t a great idea. When done by medical professions, under very specific circumstances, a fecal transplant can mean the difference between life and death: implanting feces containing healthy gut microbiome into a patient’s body has been used by […]
Good news! This week, folks living in as far north as Michigan may get treated to a stunning light show as Auroras will be shining brighter and further away from the planet’s axis than usual. What a rare treat! The bad news: the same phenomenon that causes the Northern Lights to do their thing could […]
In 1990, once NASA’s twin Voyager probes had completed their grand tour of the solar system, it came time to shut off their cameras to preserve power and memory for the other scientific instruments onboard. But before that happened, there was one last photo opportunity not to be missed. Carl Sagan, a member of the […]
When it comes to redesigning or renovating a living space, envisioning changes before they occur can be tricky for most. Thankfully, the web is home to tools that can remove some of the guesswork, like Live Home 3D Pro for Mac. This app lets you create detailed and furnished floor plans for everything from sheds and […]
For many startups and fledgling businesses, web hosting — and the fees associated with it — can take a sizeable chunk out of the company budget and limit growth down the road. But, that’s not to say there aren’t hosts out there who can get your site online while staying within your budget. Arch Hosting is a […]
The web is a big place, but it’s by no means infinite where domain names are concerned. New domain seekers, in particular, are feeling the burn as .com domain names become increasingly saturated, forcing many to choose a second-rate domain name or rename their brand entirely.Opting for a .tech domain not only affords you a […]