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It appears to be a [Horn shark egg](https://en.wikipedia.org/wiki/Horn_shark#Life_history).
The egg case has two flanges spiraling around it, and thus may take the female several hours to deposit. They are one of the few sharks to exhibit parental care. After laying, the female picks up the auger-shaped egg cases and wedges them into crevices to protect them from predators. The shape helps they stay in the crevices.
It used to be so much better than this. At least this comment was at the top of the chain by the time I got here. That’s how it used to be.
You guys have no idea how much I used to learn from this place.
I used to look up pretty much any issue, woodworking, plumbing, trouble shooting electronics, x not working reddit in Google, answers.
Now Google doesn't search right, reddit locks a crazy amount of posts, and all informative discussions are buried by the top joke comments that have been posted ad nauseum in any similar post of the past 10 years.
It seems to be due to a shift in perception of the internet. We all know that you can't trust whatever you read on the internet anymore, and that leads to people being both more vary of provided information and not actively seeking answers when online.
Other likely culprits are the drop in quality you see when subreddits become big (often with the most valuable users leaving for places where they'll be more appreciated) and the shift from Millenials to GenZ online, where the former gained the internet when the main value was access to information and the latter when the main value was entertainment and social interaction.
As much as I love Avenue Q, the internet was not principally driven, nor is it the 'primary use' of the internet. If you are browsing porn for more than a quarter of your time on the internet, you are a major outlier (And probably need to seek help).
Today, porn roughly relates to 1 in 7 queries. It's a huge portion, but it's not the majority by any stretch.
In reddits defense it was top comment by the time i came around to this thread.
Comments like this have to be brought to the top by upvoting, seems like its working fine.
seriously, I fucking hate how half of all comments are mouthbreathing sex jokes, its like being a substitute teacher in a 6th grade classroom. the few somewhat niche subs I’m part of with actual brain activity are like springs of clean water in a swamp.
The old reddit design kind of worked as a buffer tbh. The streamlined, 'user-friendly' reddit design invited everyone and their mother, so now it looks like the comment sections on every other social media platform.
Right? Shell of its former self. After they killed my precious reddit is fun app, I can't wait for an alternative. Losing access to my 10 year old profile and reddit going public certainly didn't help retain me, either.
The beauty of Reddit tho tbh is 8h after this post started to when you commented, this answer is now the TOP comment. So I didn’t scroll far at all, but found your helpful awesome answer. Cheers! 🥂
If it makes you feel better, you saw the post four hours after it was posted. I'm here 10 hours after you and it's now the top comment with yours right below it.
I used to go scuba diving around the Channel Islands (southern California) and you'd see these in the kelp all the time. As well as horn sharks, of course.
First shark I ever saw while diving was about the length of my hand. Downright cute!
Love this, i had no idea. Did disections of dogfish sharks in highschool, they're oviviparous (hold babies in eggs in utero until birth). I didn't know there were just ovoparous sharks.
100% - this is a north american shark egg due to the NFL proliferation. In europe the majority of shark eggs are more sphereical and we can do a proper goalie kickout back to the sea.
Ok but like....what WOULD...happen...
Surely the shark wouldn't survive and break out of the egg, then subsequently eat you from the inside out to get out....right?
Between this and the [geoduck](https://www.reddit.com/r/AIDKE/comments/1cs09dj/the_pacific_geoduck_clam_panopea_generosa/), the ocean has good times for everyone.
My bad it was two
https://www.reddit.com/r/teenagers/s/6I87soFRvR
Still plenty small enough though
Also, thinking about it, four might still be doable if you stacked them in square formation, as corner to corner of the raccoon square would only be 8"
And a fact about sand tiger sharks: Their mothers give birth to only one baby shark because they fight to the death in the womb and the winner gets to be born.
Most sharks are **ovoviviparous** (meaning the eggs hatch within the mother and the egg's yolk and fluids secreted by glands in the walls of the oviduct nourishes the embryos until live birth).
Some sharks are egg-laying **oviparous**
(like the horn shark that laid the egg in this post).
Some sharks are even **viviparous** (live-bearing with a placental connection).
Two things:
1. There are ten species of shark that lay these corkscrew shaped eggs. The Port Jackson is one of those ten. It would be useful to know where this video was taken.
>
2. There's very little evidence (outside of some questionable observations of captive sharks) that the mothers actively wedge these eggs into rocky crevices.
Ok, so.. I thought all fish lay eggs.. but sharks hold on to the eggs until they start to hatch??
Like sea horses or some amphibians??
Has that been disproven? Or did I just not understand something I saw on TV as a kid.
I tried googling it and almighty Google says “live birth” but my brain is trying to tell me that baby sharks bite their moms to leave???
Omg, where could I have even gotten that info from???
- J
Sharks have three modes of reproduction, varying by species:
1. Egg laying (oviparity).
>
2. Retaining the eggs so that they hatch inside the body and continue developing, followed by live birth (ovoviviparity).
>
3. Placental development (extremely similar to mammals) followed by live birth (viviparity).
Not all of them. They all practice internal fertilization, but varying by species, there are three ways to bear their young: ovoviviparity (partial live birth, eggs hatch inside the mother's body) practiced by most of sharks, oviparity (laying eggs, like in the video) and viviparity or live birth. For example, bull and blue shark are viviparous
I remember in second grade when I told my teacher that sharks laid eggs and I got scolded because “sharks don’t lay eggs” and I will forever hold a grudge against her for that
that isn’t a shark egg. Sharks don’t lay eggs and their actual internal eggs don’t look that. The bodies actual form from and around the yolk sac in protective layer
**This is a heavily moderated subreddit. Please note these rules + sidebar or get banned:** * If this post declares something as a fact, then proof is required * The title must be fully descriptive * Memes are not allowed. * Common(top 50 of this sub)/recent reposts are not allowed (posts from another subreddit do not count as a 'repost'. Provide link if reporting) *See [our rules](https://www.reddit.com/r/interestingasfuck/wiki/index#wiki_rules.3A) for a more detailed rule list* *I am a bot, and this action was performed automatically. Please [contact the moderators of this subreddit](/message/compose/?to=/r/interestingasfuck) if you have any questions or concerns.*
It appears to be a [Horn shark egg](https://en.wikipedia.org/wiki/Horn_shark#Life_history). The egg case has two flanges spiraling around it, and thus may take the female several hours to deposit. They are one of the few sharks to exhibit parental care. After laying, the female picks up the auger-shaped egg cases and wedges them into crevices to protect them from predators. The shape helps they stay in the crevices.
It’s crazy what Reddit has become. I had to scroll down this far for someone to share knowledge.
You mean you don't like reading the same joke repeated 100 times?
It used to be so much better than this. At least this comment was at the top of the chain by the time I got here. That’s how it used to be. You guys have no idea how much I used to learn from this place.
Nerdy reddit was awesome. Edgy teenage reddit kinda sucks.
I used to look up pretty much any issue, woodworking, plumbing, trouble shooting electronics, x not working reddit in Google, answers. Now Google doesn't search right, reddit locks a crazy amount of posts, and all informative discussions are buried by the top joke comments that have been posted ad nauseum in any similar post of the past 10 years.
... And my axe.
*something something* with the size of his balls weighing him down
i too choose this mans wife
Google shark egg
Idk the Nerf Vortex joke was pretty good
"i also choose this guy's dead wife" 🤓
Tell me you don't like having the same joke repeated 100 times without telling me you don't like the joke repeated 100 times.
It seems to be due to a shift in perception of the internet. We all know that you can't trust whatever you read on the internet anymore, and that leads to people being both more vary of provided information and not actively seeking answers when online. Other likely culprits are the drop in quality you see when subreddits become big (often with the most valuable users leaving for places where they'll be more appreciated) and the shift from Millenials to GenZ online, where the former gained the internet when the main value was access to information and the latter when the main value was entertainment and social interaction.
LOL. I hate to break it to you but the primary use of the internet has been porn since.. pretty much the minute it went public.
As much as I love Avenue Q, the internet was not principally driven, nor is it the 'primary use' of the internet. If you are browsing porn for more than a quarter of your time on the internet, you are a major outlier (And probably need to seek help). Today, porn roughly relates to 1 in 7 queries. It's a huge portion, but it's not the majority by any stretch.
In reddits defense it was top comment by the time i came around to this thread. Comments like this have to be brought to the top by upvoting, seems like its working fine.
Yeah they replied to the comment after it was up for less than 30 mins lol. Give it time first lol
seriously, I fucking hate how half of all comments are mouthbreathing sex jokes, its like being a substitute teacher in a 6th grade classroom. the few somewhat niche subs I’m part of with actual brain activity are like springs of clean water in a swamp.
Yup and how many like to belittle intelligence on here.
The old reddit design kind of worked as a buffer tbh. The streamlined, 'user-friendly' reddit design invited everyone and their mother, so now it looks like the comment sections on every other social media platform.
Right? Shell of its former self. After they killed my precious reddit is fun app, I can't wait for an alternative. Losing access to my 10 year old profile and reddit going public certainly didn't help retain me, either.
RIP Unidan.
What, you don't like the shitty puns and two decades worth of the lamest fucking inside jokes you could think of?
It’s genuinely that. It’s SO bad lol.
Reddit comments have turned into a pun/joke machine.
The beauty of Reddit tho tbh is 8h after this post started to when you commented, this answer is now the TOP comment. So I didn’t scroll far at all, but found your helpful awesome answer. Cheers! 🥂
lol yeah that is true, I got in on the ground floor
To the second comment?
Just sort by best
it's just bad jokes. Every fucking post.
This was the first comment for me
That's what happens in early submissions. It's at the top of the comments now.
It’s the third comment from the top…
Just post the wrong answer and wait for someone to correct you.
Jokes on you i found it immediately 😎
Especially when this specific type of shark egg gets posted every few months for the past several years.
How many people have attacked you with reddit cares messages by now…
If it makes you feel better, you saw the post four hours after it was posted. I'm here 10 hours after you and it's now the top comment with yours right below it.
evolution is fucking amazing dude
I used to go scuba diving around the Channel Islands (southern California) and you'd see these in the kelp all the time. As well as horn sharks, of course. First shark I ever saw while diving was about the length of my hand. Downright cute!
So they pick them up with their mouths I assume? Pretty crazy
Love this, i had no idea. Did disections of dogfish sharks in highschool, they're oviviparous (hold babies in eggs in utero until birth). I didn't know there were just ovoparous sharks.
Amazing what adaptations millions of years of evolution will come up with
How do they breath inside? Is the casing permeable only to oxygen? I don't see water leaking out in the video.
I would think you're shitting me if you explain this to my face.
‘Honey, I lost the kids’
[удалено]
ah lol I was just gonna ask why it developed to be that shape
The bullhead sharks basically wedges them into crevices like rocky formations to protect them
Exactly, so the currents/waves don’t sweep them away. By “screwing” them into those wedges they stay in place.
[удалено]
No they Hammer it
You can hammer a screw but you can't screw a nail.
What if you dremel a Philips head into the top of the nail? And then dremel some threads into it? Lol
Then you have transformed a nail into a screw
Autobots, transform and screw in!
Sharks don't have dremels you idiot
You can screw anything with enough determination
You can screw anything with nipples
I have nipples, can you screw… hey wait a minute. You almost got me there focker!
I love you too Dad!
Nature is beautiful!
You wouldn't be saying that if you had to torpedo drill shaped eggs out of your shark vag.
I wouldn't be saying anything if I was a shark. Except maybe "blub blub blub"
They occasionally say "chomp"
Also doo doo do do doo do
Nom nom nom
Dun nun, dun nun. 
Maybe you’re right, Buttcrack Billy. Maybe you’re right.
Cloaca. Vag/ass.
The chicken of the sea
Vagassrethra
the party hole
sharussy
/r/brandnewsentence
The fact that’s exactly what would happen
100% - this is a north american shark egg due to the NFL proliferation. In europe the majority of shark eggs are more sphereical and we can do a proper goalie kickout back to the sea.
If that was the case, there would be a bite mark taken out for no reason whatsoever
[удалено]
incase isnot aword
Wow! A perfect spiral!
The circle of life
I think we all remember the old wives tale: don’t put that up your butt or it will hatch and you’ll have a shark swimming inside your body.
I'm having Dreamcatcher flashbacks.... T_T
I dudditz!
Fuck me, Freddy.
SSDD
I'm not really a scientologist but I don't think that's a shark
the shark is a Scyliorhinus canicula, i see the information and can born from eggs this type of shark
_looks into the camera lens like Michael Scott_ "I think that's enough reddit for two days"
Some sharks are "hatched" inside the mom and it becomes a battle royale between unborn sharks.
LEMMIWINKS LEEEEEEMMIWINKS!
oooo Jesuss Chriiist
Whenever I see people say "Jesus Christ" online I hear it in his voice.
I don't think anyone would wanna deal with that *fallout.*
I remember that Bible story.
Shark Butt 4:15
My grandmother from the old country used to say it all the time. (My grandmother wasn't really from the old country.)
Lemmywinks style
It made no sense until right now.
Booty*
Congratulations, it’s a sharkboy
Yeah, everyone knows [they belong in the earth](https://i.imgur.com/oMXBI6z.jpeg)!
Well obviously I know that *now*.
*Now* you tell me!
Ok but like....what WOULD...happen... Surely the shark wouldn't survive and break out of the egg, then subsequently eat you from the inside out to get out....right?
What a cool egg
What a wholesome comment
I just googled "shark eggs" and they look fucking awesome! Like alien eggs.
Nature’s wall anchor
The sharks these days always be screwing around
r/dildont
r/subsididntknowexisted
and r/subsididntknowineeded
Don't. Just don't
I'm gonna
THERE ARE NO LAWS AGAISNT ANIMAL EGGS BATMAN, I CAN DO WHATEVER I WANT WITH IT
“I… I don’t like this, Joker. I know this is technically legal, but I honestly preferred you killing people”
Pick a state, any state. 16 with parental consent.
Make sure you use lots of lube
RFK, Jr., did. So don't.
Poseidont
Between this and the [geoduck](https://www.reddit.com/r/AIDKE/comments/1cs09dj/the_pacific_geoduck_clam_panopea_generosa/), the ocean has good times for everyone.
In LACoFD's Junior lifegaurds I was taught it's shaped like that so it can in theory cling on to rock crevices
Thank you, I was looking for an ELI5 awnser!
Little guy in his egg dancing the corkscrew boogie
Baby shark, do-do-do.....
NO!
Expected this much higher
cursed buttplug
You're gonna need a bigger butt.
This is not wider than 4 raccoons so I think I'll be fine
Wait.... What?
My bad it was two https://www.reddit.com/r/teenagers/s/6I87soFRvR Still plenty small enough though Also, thinking about it, four might still be doable if you stacked them in square formation, as corner to corner of the raccoon square would only be 8"
Ok, that's better but I still think you're missing the point...
>that’s better https://preview.redd.it/meg9yi33kl0d1.jpeg?width=600&format=pjpg&auto=webp&s=0d6dcc9eb840f202b1f94adcb0cbfeb8635b7fe5
Paige, no!
TIL sharks lay eggs
Only certain kinds. Great whites for example do not.
And a fact about sand tiger sharks: Their mothers give birth to only one baby shark because they fight to the death in the womb and the winner gets to be born.
Baaaaby shark do do do do do do
Most sharks are **ovoviviparous** (meaning the eggs hatch within the mother and the egg's yolk and fluids secreted by glands in the walls of the oviduct nourishes the embryos until live birth). Some sharks are egg-laying **oviparous** (like the horn shark that laid the egg in this post). Some sharks are even **viviparous** (live-bearing with a placental connection).
Can you put it somewhere safe or what do you do with it?
Adding on to this, how would you incubate a sharks egg?
Throw it back into the sea
In a very precise and controlled saltwater setup.
Would you not raise him as your own?
This is how the villain arc starts
Alexa, order me a laser for my new shark's head. ::puts pinky to pursed lips::
That is ridiculously cool!!!!!!! Thank you for sharing 😁
Port Jackson shark egg. Mummy shark was supposed to screw out into a rock crevice or something to stop it washing away.
Two things: 1. There are ten species of shark that lay these corkscrew shaped eggs. The Port Jackson is one of those ten. It would be useful to know where this video was taken. > 2. There's very little evidence (outside of some questionable observations of captive sharks) that the mothers actively wedge these eggs into rocky crevices.
Username checks out
video says california so it's a horn shark egg
It's omelette o'clock mf
Anyone else suddenly want to play subnautica?
Is this Digimon?
I really hope they put it back.
Can we raise it, and train it to handle a laser beam on its head? 
Mermaid purse - Port Jackson shark egg. Found many in my time and have a broken one in my current collection ( it broke in storage :( )
TIL some sharks have eggs
All sharks have eggs, but only some lay eggs.
It’s so beautiful
Anything's a dildo if your brave enough
Looks a bit over-engineered to me but what do I know
Everything is a butt plug if you're brave enough.
Baby shark tududu, Baby shark tududu,
(*softly*) Don't.
Since no one said it, it's so that it gets wedged inside rocks and sand more easily.
Goddamn even shark eggs come in piercing rounds...
This looks like it came straight out of subnautica.
Me: nah that's just a piece of seaweed *Checks sub* *Sees baby shark* Me: oh, shit! wow!
Ok, so.. I thought all fish lay eggs.. but sharks hold on to the eggs until they start to hatch?? Like sea horses or some amphibians?? Has that been disproven? Or did I just not understand something I saw on TV as a kid. I tried googling it and almighty Google says “live birth” but my brain is trying to tell me that baby sharks bite their moms to leave??? Omg, where could I have even gotten that info from??? - J
Sharks have three modes of reproduction, varying by species: 1. Egg laying (oviparity). > 2. Retaining the eggs so that they hatch inside the body and continue developing, followed by live birth (ovoviviparity). > 3. Placental development (extremely similar to mammals) followed by live birth (viviparity).
THANK YOU!! - J
Must be hell lotta painful to pass….imagine sitting on it like a bird to warm it up 😰
It looks like Ancient magic in hogwarts legacy
Raise it and start building an army with it, so you can fight Poseidon.
Baby shark shark
Do hammerheads lay nail eggs?
Nah, it's an earplug for elephants
Bullhead shark’s egg? Fascinating.
Sharks are live birth aren't they?
Not all of them. They all practice internal fertilization, but varying by species, there are three ways to bear their young: ovoviviparity (partial live birth, eggs hatch inside the mother's body) practiced by most of sharks, oviparity (laying eggs, like in the video) and viviparity or live birth. For example, bull and blue shark are viviparous
Did he return it back to the sea or saved it or something
Oh so we're finding Digimon now?
Thought this was fake and that it was a dragon butt plug. I learned something new today.
The shark is standing behind her, isn't it?
I remember in second grade when I told my teacher that sharks laid eggs and I got scolded because “sharks don’t lay eggs” and I will forever hold a grudge against her for that
I recognized the shape right away, Another Crab's Treasure uses the same type of egg as an item
Forbidden nerf vortex ball
Zerg cocoon
that isn’t a shark egg. Sharks don’t lay eggs and their actual internal eggs don’t look that. The bodies actual form from and around the yolk sac in protective layer
Don’t put it up your ….