facts

WTF Fun Fact 12752 – The Loudest Animal

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What would be your guess for the loudest animal on earth? A lion? An elephant? What about a shrimp?

Ok, but what about a specific type of pistol shrimp named after the bank Pink Floyd? That sounds a bit more believable,

The loudest animal

You’ve probably never heard a pistol shrimp make a noise unless you spend time near reefs with your head underwater. But the way they catch their prey is pretty interesting. They use bubbles.

By snapping their claws super hard and fast, a pistol shrimp can create a bubble that travels out from their bodies at around 60 mph. That’s enough to stun their prey so they can attack.

But when the bubble pops, it really makes the ocean rock.

Noisy eaters

One specific type of pistol shrimp is known for being a particularly noisy eater (or at least bubble-maker). Synalpheus pinkfloydi is pistol shrimp named after Pink Floyd. Because, hey, why not? We’re pretty sure one of the coolest things about being a scientist is getting to name stuff to your liking.

Anyway, this little shrimp can snap so hard that when it’s bubbles burst the noise can reach up to 210 decibels, according to the Ocean Conservancy (cited below). That’s louder than an actual pistol. Gunshots can reach around 175 decibels.

Clawing their way up the chain of command

The Ocean Conservancy also notes that “The pistol shrimp’s mighty snap comes in handy for more than just lunch. Its powerful claw can deter predators or other competitors looking to take over the shrimp’s burrow. It also makes males more attractive to the ladies—larger claws suggest they are better mates.”

It turns out a good claw is better than a pistol any day!

But it turns out pistol shrimp are also lovers, not just fighters. They work together – even with other species – to help find food and keep their hunting mates safe. So next time you’re hunting in a reef, find a friend with a big claw!

– WTF fun facts

Source: “The Real Power of the Pistol Shrimp” — Ocean Conservancy

WTF Fun Fact 12751 – Snails Can Sleep For 3 Years

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You know have knowns snails live their lives at a leisurely pace, but snails can actually sleep for three years at a time!

They’re also hermaphrodites, which means they have male and female reproductive organs, so they don’t even need other snails to mate. They are the ultimate hermits.

But those three-year naps aren’t necessarily a good thing (no matter how comforting they might sound to your right now).

Snails sleep longest in summer

Some snail hibernation is called “estivation.” Hibernation is something that happens when animals sleep to conserve energy in the winter. Snails also sleep in the summer – that’s estivation. Snails can actually do both, but it mostly depends on species or geography (nevertheless, it’s still a skill we’re jealous of).

But why do snails sleep for three years?

Well, not all do. In fact, a three-year estivation typically occurs when the snail’s resources are so depleted that it’s either sleep-or-die. (Yes, we know how relatable this sounds – especially if you have little ones.)

A gooey slumber

Even if snails are estivating for much shorter periods of time, they secrete mucus that covers their whole bodies if the weather is too hot or dry. The mucus helps to protect them from hot or dry weather.

Snails need moisture to survive, so they just provide their own!

Of course, a gooey nap doesn’t protect them from predators thinking they’re dead.

Snail power naps

Snails usually sleep for about 15 hours at a time and then are awake for 30 hours. But that’s under optimal environmental conditions (which are kind of hard to come by these days, no matter what your species.)

This kind of sounds like a productive schedule, if we’re being honest. (Or maybe we could just use a very alert 30 hours to get our work done.)

Beware the sleeping snail

If you think a snail is dead, consider that it may just be taking a power nap. This is especially the case if you keep a snail as a pet. If it is stuck to the side of an aquarium but not moving, it’s likely still alive because it’s secreting mucus to make it stick.

Pet snails are unlikely to hibernate for years (mostly because if humans are providing suboptimal conditions, it’s likely bad enough to just kill the snail).

If the snail’s body is shriveled and dry (if you can see into the shell), then the snail is almost certainly dead (sorry for your loss).

And if you see a snail in the garden, well, that’s up to you and how much you want them around, but crushing it because you think it’s dead could be a deadly mistake for the snail.

– WTF fun facts

Source: “Let’s Learn Exactly How Some Snails Sleep” — AZ Pet Vet

WTF Fun Fact 12750 – The Corpus of Galen of Pergamon

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Galen of Pergamon was a Greek physician working in the Roman Empire in the second century AD. It’s believed he wrote hundreds of treatises. He was a well-known figure in his own time who treated politicians (including Roman emperor Marcus Aurelius) and gladiators alike.

Galen of Pergamon’s treatises

Galen wrote so many medical treatises during his lifetime that had to distill them later on into at least three treatises. He titled these: “On My Own Books,” “On the Order of My Own Books,” and “On My Own Opinions” (the latter only survives in fragments).

He wrote about anatomy and physiology, ethics, pharmacy, medical instruments, hygiene, and even the philosophy of medicine. Much of his work was based on the Hippocratic Corpus. However, he took issue with many of the ideas in those ancient Greek works.

By writing the organizing treatises, Galen meant to set out a curriculum for aspiring doctors. This would allow them to understand the order in which to read his books and what larger philosophical points to take away from each.

Galen outside of medicine

Galen was so prolific that he even wrote on subjects that typically lie outside medicine, such as linguistics. But many of those works are lost and we only know about them via references in other treatises.

Galen is also considered an ancient philosopher and engaged with matter of logic and the texts of Aristotle, Plato, and the Stoics.

Despite all of his medical experimentation and the scientific nature of his writing, he also claimed to have knowledge of medicine thanks to the ancient Greek healing god Asclepius. He also believed that the human body was such a perfect and divine machine that it was certainly created by a greater being. However, he does not engage directly with other metaphysical questions about what else that god might believe or dictate about the world.

– WTF fun facts

Source: “Galen” — Stanford Encyclopedia of Philosophy

WTF Fun Fact 12749 – The Invention of Kidney Dialysis

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The development of kidney dialysis started centuries ago. Even doctors in the ancient world understood the kidneys played an important role in filtering bodily fluids. Galen’s treatise On the Natural Faculties mentioned doctors prior to his time investigating the organ and its function.

But figuring out how to replicate the filtering function of the kidneys didn’t happen until the 1800s when a Scottish chemist named Thomas Graham realized he could create a membrane to act as a filter to “clean” some bodily fluids (though he wasn’t exactly spot on about what he was filtering out).

Despite sometimes being referred to as the “Father of Dialysis,” his discoveries weren’t kidney-related. In fact, for decades, scientists were more concerned with trying to filter blood for trauma patients during surgery. That’s because they didn’t have blood banks, so when someone lost blood, they needed to preserve it for the patient but also needed a way of cleaning it up first.

Blood dialysis was performed on animals in the early 20th century, and the use of blood thinners was already in use to keep it from clotting (which is necessary if you want to put it back in the body!).

In 1924, a German doctor named Georg Haas realized the possibilities of dialysis for kidney patients. Since our kidneys are responsible for filtering out impurities, those in kidney failure need some extra help.

Haas seems to have had around six patients that used his dialysis machine, but it wasn’t quite ready for prime time yet. All of those patients died of kidney failure (possibly as a result of the dialysis not filtering adequately).

The “drum kidney” was introduced in 1945 by a Dutch doctor Willem Kolff, and because materials science was more advanced, the plastics and other materials he had at his disposal made the machine more effective for cleaning bodily fluids (and didn’t leach its own materials into patients either).

Before we get to today’s modern-day dialysis machines, there were many more people involved in the invention of dialysis – including chemists and physicians that improved upon past technology:

– Swedish chemist Nils Alwall designed a machine to both clean and drain blood
– American scientist Belding Scribner had the dialysis process uninterrupted so the body would not be severely lacking in blood during the dialysis treatment
– Michael Brescia and James Cimino found a way to make Scribner’s invention work with needles so patients didn’t need to maintain an open wound that might be prone to infection

And these are just the preliminary steps we took on our way to modern kidney dialysis!

– WTF fun facts

Source: “History of the kidney disease treatment” — St. George’s Kidney Patients Association

WTF Fun Fact 12748 – Koala Bears Have Fingerprints

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Koala bears have fingerprints just like apes and humans. This is surprising since our last common ancestor lived over 100 million years ago.

Nevertheless, koalas have retained their unique fingerprints.

We tend to think of fingerprints as solely a product of our criminal justice system. And yet, those little lines on our fingers actually serve a purpose besides putting us at a crime scene.

The purpose of fingerprints

Our fingerprints help us grab and feel objects, and researchers believe they help our sense of touch. This isn’t so important to us anymore, but it is helpful to animals who can use touch sensations to judge whether leaves, for example, belong to the right tree.

Our fingerprints actually cause little vibrations when we run them over objects. And since koalas really only eat eucalyptus, they like to be sure they’re in the midst of the right kind of buffet before they start chowing down.

Fingerprints are unique

Since you can’t really tell a koala’s fingerprint from a human’s, at least in terms of patterns, they may be the perfect sidekick for a crime scene. There’s no koala bear fingerprint database, so you can pretty much just let them touch everything to upend an investigation (just kidding – don’t try this at home – or anywhere else for that matter).

However, if a koala at a zoo has committed a crime, theoretically, you could fingerprint the residents to figure out whodunnit. We don’t think that’s ever been a necessity, but it sounds like a good premise for a children’s crime novel (if those existed).

Koalas bears have fingerprints and other animals have…

While koala bears have human-like fingerprints, other animals have identifying marks on their paw pads as well.

According to New Scientist (cited below):

Individual cats and dogs, for example, have unique whisker patterns. Zebras have distinct stripe arrangements and individual leopards and spotted dolphins have their own spot patterns. Humpback whales also have unique markings on the underside of their tails.”

Who knew? – WTF fun facts

Source: “Do other animals have fingerprints? And what purpose do they serve?” — New Scientist

WTF Fun Fact 12747 – Flamingos Eat Upside Down

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Because of the way their heads and beaks are built, flamingos eat upside down. Well, at least that’s how their heads are positioned.

Flamingo beaks scoop up water in the areas where they feed. Then, that water is processed through a structure called the lamellae, which acts as a filter. It ensures that water, sand, and other less tasty things are then expelled back into the water while the marine creatures (such as shrimp and brine flies) that flamingos eat are trapped inside. (Another fun fact: this food is also what makes flamingos pink!)

Flamingo anatomy

A flamingo’s tongue is designed to push the water back out through these filtration mechanisms.

According to the San Diego Zoo, “Greater and Chilean flamingos are larger and feed mostly on invertebrates such as brine flies, shrimps, and mollusks. They get these food items from the bottom mud by wading in shallow water. Sometimes they swim to get their food and sometimes by ‘upending’ (tail feathers in the air, head underwater) like ducks.”

It all happens quite fast, but if you take a look at how a flamingo is built, you’ll see that eating upside down is really the only way.

Of course, flamingos breathe air, which means that while they’re attempting to feed, they need to hold their breath – something they can do for up to a few minutes at a time. They need to poke their heads up every now and then to get more oxygen.

Flamingos eat upside down even on a zoo diet

According to the zoo, their flamingos get a special diet with all the nutrients they need. But even in these cases, they still use the same upside down stature to take in their food:

“At the San Diego Zoo and the San Diego Zoo Safari Park, the flamingos are fed a special pellet diet that is made for zoo flamingos. This food has all the nutrients the flamingos need and a pigment that helps keep them “in the pink.” To allow the flamingos to eat in their normal way (taking in water and then pumping it back out), a water source just for feeding is near their food so they can get a “beakful” of water and then food—just like they would in the wild.”

Flamingo mysteries

Flamingos are interesting creatures and there are still some habits we can’t explain – such as why they sometimes stand on one foot. No one has definitively explained that behavior yet. – WTF fun facts

Source: “Flamingo” – The San Diego Zoo

WTF Fun Fact 12746 – Owls Don’t Have Eyeballs

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Owls have eyes, of course. But owls don’t have eyeballs.

Instead, owls have eyes shaped like cylinders (with three eyelids!). Because of this shape, owls can’t roll their eyes around while keeping their heads still. That’s why they have to move their heads around too much to look around.

How do owls see without eyeballs?

According to the Office of Science & Society at McGill University: “Since moving their torsos would likely make noise that would alert their prey to their presence, owls have evolved to have necks that can spin up to 270° essentially silently.”

But why would an owl evolve to have eye rods instead of eyeballs? Wouldn’t it just be easier not to have to move your head at all in order to see to the side?

Well, perhaps, but the benefit of having eyes shaped like rods instead of balls is that not only does it allow them to see better in the dark but it’s the optimal shape for an animal with such a small skull.

The benefit of eye rods

As you may have noticed, nocturnal animals tend to have large corneas. That’s so any light can be collected more efficiently, allowing them to see in the dark.

As it turns out, these elongated eye tubes make it even easier for them to see the way they need to, even if they do have to make more movement in order to get a larger field of vision (also called binocular vision). Without moving their heads, their visual field is about 110 degrees (a human’s is 180 degrees, for comparison).

Binocular vision

Binocular vision also lets owls see objects in three dimensions (height, width, and depth). So, it turns out an owl’s eyes are pretty perfectly suited to its lifestyle.

While some believe all of this means that owls can’t see during the day because they’re blinded by too much light, that’s simply not true. Some owls can see even better than humans in the daylight as well, despite the lack of eyeballs.

At least you never have to worry about an owl giving you the side-eye. –WTF fun facts

Source: “Owls Don’t Have Eyeballs” — Office of Science & Society, McGill University

WTF Fun Fact 12745 – Billy Joel’s “Only the Good Die Young”

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While it’s hard to tell if a story about Billy Joel and Notre Dame is real or an urban legend, one thing we do know is that the seat of the Catholic controversy over Billy Joel’s “Only the Good Die Young” was Seton Hall University in New Jersey.

The offending verses

The song brings up a bit about Catholic guilt, but three verses, in particular, offended the Catholic dioceses in places like New Jersey and Boston:

“Come out Virginia, don’t let me wait
You Catholic girls start much too late
Aw, but sooner or later it comes down to fate
I might as well be the one”

“The stained glass curtain you’re hiding behind
Never lets in the sun”

“They say there’s a heaven for those who will wait
Some say it’s better but I say it ain’t
I’d rather laugh with the sinners than cry with the saints
The sinners are much more fun”

Joel told the magazine Performing Songwriter in 2008 that he didn’t write the song to be anti-Catholic but rather “pro-lust.” But that was enough for the Church.

Joel told the magazine:

“The song came out on The Stranger and was no big deal. But then Columbia decided to put it out as a single, and that’s when there were problems. There was a radio station at Seton Hall College in New Jersey. They banned it.”

After that, it got banned in Boston and Joel got a mini-reputation as being anti-Catholic. But that only made the song more popular.

Billy Joel’s “Only the Good Die Young” gains steam

“The single had been out a short amount of time and wasn’t doing well. The minute they banned it, it starting shooting up the charts, because nothing sells a record like a ban or a boycott. This record would have died out. Nobody would’ve heard it if they hadn’t tried to cut people off from it. As soon as the kids found out there was some authority that didn’t want them to hear it, they bought it in droves and it became this big hit.”

But some adults weren’t amused and sent the singer death threats. Of course, that didn’t stop him from playing it at concerts AND on Saturday Night Live. As Billy Joel recalled of “Only the Good Die Young”:

“I did it on Saturday Night Live and everybody was all freaked out,” Joel said. “They were saying, ‘You can’t do that on TV.’ I said, ‘Why not?’ Some people took offense at it, but there were all these novels written about Jewish guilt, so why not a song about Catholic guilt? Every Catholic I know is still recovering from this incredibly guilty upbringing they had. The song was supposed to be lighthearted. It was taken out of context with the rest of the album.”

The rumors that might be true

Joel also told the magazine that he “ wrote letters to the arch-bishops and the president of Seton Hall saying, ‘Please ban my next record.’”

As for the Notre Dame story/urban legend, people still tell the story that Joel was invited to play a concert at the university in the 70s on the condition that he did not play the song. Then, he proceeded to play it 6 times in a row, earning him a ban from campus. While that latter part is not true (he visited for a talk and played a concert on May 25, 2022), he certainly did play the song in the 70s – but it may only be the case that he played the opening notes about 5 times throughout the concert before playing the whole song in one of his encores (and even changed out some lyrics to specifically address “Notre Dame and Saint Mary’s girls”).

Oh, and another fun fact: the song was originally written as a reggae song, but Joel’s drummer hated it so much that he threw his drumsticks at the singer after they played it for the first time. – WTF fun facts

Source: “Billy Joel’s ‘Only The Good Die Young'” — Performing Songwriter

WTF Fun Facts 12744 – Laughter Yoga

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Laughter yoga was first introduced by Dr. Madan Kataria, a physician in Mumbai, India, in 1995. Using research that showed laughter can have beneficial effects on physical and mental health.

Since it was introduced, it has spread all over the world and has been shown to help improve mood through the release of serotonin and dopamine, improve cardiovascular function by improving blood flow to the heart, and reduce stress by suppressing cortisol levels.

Better yet, it’s free and doesn’t require anything but feeling a little bit silly.

What is laughter yoga?

You can do laughter yoga on your own, but doing it in a group setting (even via Zoom) has been shown to have further beneficial effects as it increases feelings of belonging and reduces loneliness.

According to Healthline (cited below): “Most sessions begin with simple breathing techniques, clapping, and chanting to help people relax. For example, you may begin the class by clapping rhythmically 1-2, 1-2-3 while chanting ‘ho-ho, ha-ha-ha.'”

We tried it. It does feel totally ridiculous at first. But eventually (and especially if you’re in a group), the fake laughter leads to real laughter. And your body doesn’t seem to know the difference anyway. Nothing actually has to be funny for you to get the mental and physical benefits that laughter brings.

Studies on the health effects

In addition, Healthline cited many studies pointing to proof of the benefits of laughter yoga:

“A 2019 review found simulated laughter lowered depression rates and improved mood. The authors stated that laughter exercises require little cognition and don’t rely on subjective humor, meaning most people can easily participate (Source 1).

Other studies have shown that laughing yoga may help temporarily reduce cortisol levels and stress, improve mood and energy levels, and induce a more positive mindset. In fact, it may be as effective as aerobic exercise at reducing self-reported stress (Source 2, Source 3, Source 4, Source 5, Source 6).”

Despite all the research, more large-scale studies need to be done to confirm the benefits. But in the meantime, a little laughter yoga probably wouldn’t hurt!

Check out the video below to see how you can get started. – WTF fun facts

Source: “Laughing Yoga: What Is It and Does It Work?” — Laughter Yoga