This Worm's Gut Has No Way In or Out

There are plenty of creatures out there with only one opening to handle both taking in food and getting rid of waste. But there’s at least one animal out there that doesn’t have a gut opening… at all. How does that even work?!

Hosted by: Hank Green

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[procrastinator]

"A giant mouthless, buttless worm" sounds like a Cards Against Humanity answer.

[clochard]

You could have thought those were plants. No eyes, no mouth, but plenty of blood nontheless: the colour didn't lie. Under the ocean we found a dreadful garden made of flesh and poison.

[omegasavant]

Forget the worm. Can you imagine being the guy who landed a sub on top of these things? "Uh, sir. There's blood gushing everywhere. I can explain."

[heatherkaye]

"Buttless Worms" I knew before I clicked it was Hank presenting it.

[WilliumBobCole]

"almost looks like a lipstick"... not MY first thought but okay

[lordjorach]

Ah yes, the good ol' mouthless, buttless, bacteria filled, bloody, deep sea tube boys

[huldu]

That's actually really interesting. It brings up a question... how large can a creature become and still work like this worm? From what I understand these worms aren't exactly small. Could there be MASSIVE creatures on other planets that like this worm only exist because of the bacteria inside of it?

[francoislacombe]

"I have no mouth, and I must scream."

[patrickmccurry]

This should be a kid's pop up book. "Hey, let's go explore the deep ocean vents with Mr. Lovecraft. "

[pangolothian]

"It's like having.. your kitchen.. in your body.." lol I cracked up so hard with how worried you sounded saying that.

[glenngriffon]

So Alvin's crew saw a vent and decided to set down and just immediately crushed a colony of these worms. That's both sad and hilarious because I cannot imagine the crew's reaction to sitting down and suddenly being covered in blood.

[NaviDoodlez]

Michael: "It's a hole-less donut!"

[gotcha]

I love Scishow because it always manages to bring cool, down to Earth science without click bait titles or simplifying too much. Love yall

[OctorokSushi]

People: Live fast, eat ass!

Tube worms: :(

[Mark-zuoz]

To the bacteria in the worm's gut: You may ask yourself, how did I get here?

[jacobellinger]

My 8th grade teacher tried to tell me I was wrong when I corrected her that not ALL life got it's energy from the sun. She had never heard of tube worms even though supposedly she went to college for biology

[Klein]

Me, horribly depressed, getting the notification for this video: /sigh/ sure tell me about buttless worms, scishow

[Christopher-N]

(2:26) "It's like having a kitchen in your body." For those who fondly remember the sitcom, _Home Improvement, _ the analogy would be like having a butcher in your refrigerator (the Man's Kitchen from s3e21).

[chimeraproject]

Puts the expression "no if, and or butts" into a whole new level

[hopolo]

when your bacterial infection keeps you alive, say no to antibiotics.