The idea of this thread is to post something cool that you learned today. It could be related to science, history, a moral lesson, anything you'd like.
Today I learned how jellyfish sting[*]. I always thought it was some kind of contact poison that goes through the skin, but actually in their tentacles they have like a bunch of microscopic needles that extend on contact really fast and inject venom into their victims. It looks really cool on high speed camera, too.
[*]Thanks to SmarterEveryDay channel on YouTube (which you should seriously check out).
Today I learned how jellyfish sting[*]. I always thought it was some kind of contact poison that goes through the skin, but actually in their tentacles they have like a bunch of microscopic needles that extend on contact really fast and inject venom into their victims. It looks really cool on high speed camera, too.
[*]Thanks to SmarterEveryDay channel on YouTube (which you should seriously check out).