The Shark 3-axis hang glider wing is a unique design of the mid-1980s by Christof Kratzner of the Germany. It was a one-off design intended to explore the possibility of controlling a weight-shift design hang glider (a Shark, I believe, if memory serves me correctly - I stand to be corrected) by 3-axis aerodynamic controls. The glider used wing warping through a stick and the pilot sat in a cage like a Bright Star design.
Christof had a scary incident while towing the glider in Australia, and did not pursue the design further.
If you have further information, please send it along.