Known Giants: Megalodon to Blue Whale

Since before the dawn of recorded history, humans have been haunted by rumors of monsters beneath the waves -- and, as time wore on, it seemed at least some of those legends were based in truth. Today's question: could any sea serpents, leviathans or other cryptids remain alive in the modern day? Tune in to learn more.

They don't want you to read our book.: https://static.macmillan.com/static/fib/stuff-you-should-read/

See omnystudio.com/listener for privacy information.