Do you know why hammerhead sharks have that distinctive head shape? Are you curious why shark copulation often involves biting, or how a tiger shark got involved in a murder trial? In this episode of The List Show, Erin (@erincmccarthy) shares 31 shark facts that will make any week feel like shark week. Amateur biologists, Icelandic gourmands, and shark-fearing fireworks enthusiasts will want to watch. You’ll also learn about bioluminescent bellies, presidential fossils, and rejected titles for the novel Jaws. In case you forgot, The List Show is a trivia-tastic, fact-filled show for curious people. Subscribe here for new Mental Floss episodes every two weeks. Website: www.mentalfloss.com Twitter: www.twitter.com/mental_floss Facebook: www.facebook.com/mentalflossm... Store: store.mentalfloss.com/