What lurks in the navy-blue depths of your shoes? It is Architeuthis, the giant squid! Growing to lengths of at least 43 feet (that must require a lot of socks) their primary enemy is the sperm whale -- you can even see the tail of one retreating into the toe seams. Did you know that in addition to tentacles, they also have seven rows of "denticles" in their beaks? Well I'm sorry to be the bearer of creepy news, but it's true, and it's just as horrifying as it sounds.