What's Down There?

I recall reading about this:
http://www.youtube.com/watch?v=Z_QyGANCUJI
What ever ate this great white shark would probably make the shark from "jaws" look like a piker...

There was a show on recently where they showed evidence of a gigantic shark off Africa and other areas in the oceans. The pictures were pretty incredible but there was no real absolute proof of size and type of shark. But it did seem to indicate that there was some very large unknown species of shark out there. 8O