Have you ever put a seashell up to your ear and heard a roaring sound the sounds sort of like the ocean? Is it magic? No! It's science! Jessi and Squeaks explain what's up! ---------- Love SciShow Kids and want to help support it? Become a patron on Patreon: https://www.patreon.com/scishowkids ---------- Looking for SciShow elsewhere on the internet? Facebook: http://www.facebook.com/scishow Twitter: http://www.twitter.com/scishow Tumblr: http://scishow.tumblr.com Instagram: http://instagram.com/thescishow SOURCES: https://www.wired.com/2010/11/how-do-you-hear-the-sea-in-a-shell/ http://wonderopolis.org/wonder/can-you-really-hear-the-ocean-in-a-shell http://www.physicsclassroom.com/class/sound/Lesson-5/Resonance