With brains that process information almost like a computer, the sea creatures already use tools and can be social. But they need to make a few changes before they can take over the world.
True, no opposable thumbs, though. Perhaps they could develop some kind of written language, but I don't think it'd be nearly as easy as it is for us and I doubt they'd be able to do much with complex tools.
True, no opposable thumbs, though. Perhaps they could develop some kind of written language, but I don't think it'd be nearly as easy as it is for us and I doubt they'd be able to do much with complex tools.