High Def 3D sonar?

Ever since taking a class on direction-finding and signal processing I've had an ear to the wind in regard to new advancements. MIT has developed a "Super Sonar" which supposedly, according to NPR allows for real-time tracking of fish schools over miles of ocean floor. I have to figure that either some antenna/radar theory got worked into this development...or it will lead to some interesting developments in antenna/radar.
It may be a while before you can see in the dark with your cell-phone though. From the story I heard, the "super sonar" is a monster and requires a ton of computing power.

The story on NPR.
Web page of Professor Nicholas Makris