Hey, your day is going OK so far. You know, for a Monday. Let's ruin that.
And what's coming out of it? That's its proboscis, a hollow, muscular structure inside of the worms that they use to grasp onto their prey. In some worms, it's poisonous.
It's like a sticky hand!
"When attacking prey, they compress their bodies to push out the proboscis like the finger of a latex glove turned inside-out," the Smithsonian reported.
Ribbon worms are actually pretty badass. They swallow their prey whole, can regenerate, and become two separate worms if they're severed. They can create more than 200,000 worms from their six-inch body.
I mean, I'm a little jealous. That's like a worm army.