Time Capsule Disappeared

I connected my TC a few weeks ago, and it used to be found in the Finder panel, just like a USB or SD card would show. I can't find it now. When I opened Airport Utility, it shows the Internet ("Iworld") and the TC connected with green lights, but I can't open anything. Help. I have a ton of valuable files on the TC I just backed up so I can clear off my computer. How do I reconnect so I can save (and back up to a cloud) whats on the TC.