Millions of years ago, the earth s vast oceans were home to some of the fiercest and strangest creatures to ever roam the planet. Among them were a giant bone-jawed beast with a bite force three times that of a Great White shark, a monstrous six-foot sea scorpion with as many killing tools as a Swiss Army knife, and a massive marine predator whose neck, several times the length of a giraffe's, let it ambush and pick off whole schools of fish. While these terrifying monsters no longer rule the seas, the weapons they pioneered still show up in unexpected places.