I know this may sound extremely silly... but, all ice at the north pole is floating... creating mass that would make the ocean higher than it would be... would that ice not be there, when ice melts it takes up less volume than when it is frozen? How would the north and south poles melting raise sea levels "dramatically" , yes i know this will sound silly to a lot of you, but i'm serious! can anyone give me a solid answer? I can see how it would effect our weather, causing different currents in the ocreans, but coastal flooding, really a huge deal? maybe only on a small scale? and wouldn't a small percentage of that melted water be evaporated into the atmosphere(which would keep sea levels down slightly), and become clouds? creating more chaotic weather, and different weather patterns? and fill up old dry lake beds and seas that have since dried uop with new water, displacing water fairly equally throughout the globe?