thetacola

So I have this submarine, and I wanted to take it to the bottom of the ocean. I had it at the bottom near the shore, but then I decided to take it out a bit further. From what I read, the bottom of the ocean is supposed to be ~1000 meters, but I've gotten quite a bit deeper than that and have yet to see it. Did my craft somehow glitch into Kerbin, or is the ocean just this deep?