Because I have seen how the world will end. Over time, water takes over the land--continents disappear, and the beasts of the sea start growing. It's kind of like that thing with goldfish. Sure, they stay small when kept in a tiny bowl, but give them space, and they'll soon swell to enormous proportions. Eventually, one mammoth fish assumes the role of leader of the whole world. He is huge and hulking. All the remaining people have long been subjected to the sea--they float around in a glass ship, watching the sea creatures swim by until one day, they see him--the beast of the sea. He swallows the whole ship... and with it, the rest of humanity.
a possible explanation
I recently was taken by a song called "Whale Belly" by a band called Autopilot is for Lovers. The lyrics were as follows:
"If they ask you tell them we got swallowed up by a whale. If they ask you tell them... tell them we wish they were here. If they ask you tell them that we found a city in his belly and a forest inside of his chest, and his heart is our grandfather clock that beats out the hours like the fist of God. If they ask you tell them we're not coming home. We are home."
