Did You Know That Many Gastropods Can Create A Pearl, Including Terrestrial Snails? The Difference Is

Did you know that many gastropods can create a pearl, including terrestrial snails? The difference is nacre which is only found in some species of mollusks and which which gives pearls their beautiful shine. Terrestrial snails occasionally produce very small translucent white pearls which are usually lost. One non-nacre secreting sea snail, the melo melo, produces gorgeous pearls that are extremely prized and rare.

Did You Know That Many Gastropods Can Create A Pearl, Including Terrestrial Snails? The Difference Is
Did You Know That Many Gastropods Can Create A Pearl, Including Terrestrial Snails? The Difference Is

More Posts from Sumactic and Others

3 weeks ago

i had a dream i worked in an underwater restaurant and people kept ordering ice in their drinks and then getting mad at me when it would float away. and i’d tell them beforehand that the ice would float away & they’d be like lol no that’s not how it works just give me the ice. I’m fighting customer service battles never seen before

1 month ago
Museum Asks People To Recreate Paintings At Home, Gets 30 New Impressive Photos
It appears that boredom lies behind the most creative ideas. That's why quarantine has produced some of the most entertaining activities. One of them is the Getty Museum challenge, that so many of you have already seen in our previous article here.
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4 weeks ago
A Fun Thing About Elytras Is They Give Me A Genuine Reason To Draw Speedrunners With Wings

a fun thing about elytras is they give me a genuine reason to draw speedrunners with wings


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1 week ago

There's this sort of anthropomorphizing that inherently happens in language that really gets me sometimes. I'm still not over the terminology of "gravity assist," the technique where we launch satellites into the orbit of other planets so that we can build momentum via the astounding and literally astronomical strength of their gravitational forces, to "slingshot" them into the direction we need with a speed that we could never, ever, ever create ourselves. I mean, some of these slingshots easily get probes hurtling through space at tens of thousands of miles per hour. Wikipedia has a handy diagram of the Voyager 1 satellite doing such a thing.

There's This Sort Of Anthropomorphizing That Inherently Happens In Language That Really Gets Me Sometimes.

"Gravity assist." "Slingshot." Of course, on a very basic and objective level, yes, we are taking advantage of forces generated by outside objects to specifically help in our goals. We're getting help from objects in the same way a river can power a mill. And of course we call it a "slingshot," because the motion is very similar (mentally at least; I can't be sure about the exact physics).

Plus, especially compared to the other sciences, the terminology for astrophysics is like, really straightforward. "Black hole?" Damn yeah it sure is. "Big bang?" It sure was. "Galactic cluster?" Buddy you're never gonna guess what this is. I think it's an effect of the fact that language is generally developed for life on earth and all the strange variances that happen on its surface, that applying it to something as alien and vast as space, general terms tend to suffice very well in a lot more places than, like... idk, botany.

But, like. "Gravity assist." I still can't get the notion out of my head that such language implies us receiving active help from our celestial neighbors. They come to our aid. We are working together. We are assisted. Jupiter and the other planets saw our little messengers coming from its pale blue molecular cousin, and we set up the physics just right, so that they could help us send them out to far stranger places than this, to tell us all about what they find out there.

We are assisted.

And there is no better way to illustrate my feelings on the matter than to just show you guys one of my favorite paintings, this 1973 NASA art by Rick Guidice to show the Pioneer probe doing this exact thing:

There's This Sort Of Anthropomorphizing That Inherently Happens In Language That Really Gets Me Sometimes.

"... You, sent out beyond your recall, go to the limits of your longing. Embody me. ..."

Gravity assist.


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1 month ago

i’m hiding in the passepartout!


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1 month ago

The most frustrating part of being trans is that you can't win.

My uni has quite a few all-gender washrooms. (Specifically all-gender, cis people are absolutely encouraged to use them). And despite the fact that there are womens washrooms everywhere on campus as well, I've had cis women treat me with borderline disgust when I use the all-gender bathroom. I've had people tell me that "sure, its all genders, but when a cis man uses it its just weird".

And like. Thats the point! Even IF a cishet man using a washroom he is specifically allowed in was weird. Even then. You have to understand that no trans or nonbinary person can safely use an all-genders washroom if using it means they are either trans or female.

Like to be very clear- I am a cis-passing trans man. There are so many reasons I feel more comfortable in a non-gendered washroom. Even if I was cis I woild likely want to, because I am gnc and don't always feel safe in purely male spaces. And even if I was the cissest, hetesst, most gender conforming man on the planet, I might still want to use it because its closer to my classes.

And really, this all comes back to this deeply transmisoginistic idea that Men Are A Threat to Women in Womens Washrooms,, which. If I have to explain to you why this is purely a propagandistic falsehood I really think you need to do a gender 101 course.

Gender neutral washrooms cannot be "women Lite washrooms". In order to protect trans people, at all stages of coming out and transition and of all presentations, for the love of god stop dictating who can use all-gender washrooms.

2 months ago

Hey, look at me. Look at me. I’ve said it once and I’ll say it again: you need to condition yourself to being okay with being inconvenienced by things. The first time I spoke about this I meant it in a mental health way- it is good to go out to the store and see people versus just ordering alone at home- but there is another more pressing societal issue you should be more concerned about as well.

Any service you rely on for convenience can be weaponized against you the moment you begin to rely on it. Streaming used to be a cheap and convenient way to see movies at home. It is now exorbitantly expensive, you need multiple accounts just to get what you want, and any of those movies can be taken from you at any time. And unless you have gotten used to going through the “inconvenience” of owning physical media, you can do nothing about it. Same goes for buying things on Amazon. Same goes for any service like DoorDash etc. These companies WANT you to be reliant on them for convenience so they can do whatever they want to you because, well, what else are you gonna do?

Same thing goes for the uptick in AI. If you train yourself to become reliant on AI for doing basic things, you will be taken advantage of. It is only a matter of a couple years before there are no free AI services. Not only that, but in the usage of AI’s case, it is robbing you of valuable skills that you need to curate that you will be helpless without the moment the AI companies drive in the knife the way they have done with streaming. Delivery. Cable. Internet. Etc. It will happen to AI too. And if you are not practicing skills such as. Writing. You are not only going to be at the mercy of AI companies in the digital world, but you are going to be extremely easy to take advantage of in real life too.

I am begging you to let go of learned helplessness. I am begging you to stop letting these companies TEACH you helplessness. Do something like learn to pirate. It is way more inconvenient at the beginning, but once you know how, it is one less way companies can take advantage of you. Garden. Go to the thrift store (older clothes hold up better anyway). These things take more time and effort, yes, but using time and effort are muscles you need to stretch to keep yourself from being flattened under the weight of our capitalist hellscape.

Inconvenience yourself. Please. Start with only the ways you are able. Do a little bit at a time. But do something.

1 month ago

the fundamental problem on this website is that if a homeless person tried to talk to most of y’all you’d be scared out of your minds

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