Tsunamis above the water line?

I was reading a post about placing Tsunamis where the sprinkler valves are now (stocK).
I thought this pumps had to be at or below the water line.
The reason why I ask is because I am doing an install right now and have found a good spot to put two extra pumps but I am pretty reluctant since they would be above the water line (but not much).
If I don't use that spot I will probabbly place them kind of low. The only problem is that they may be sitting in some of the residual water that doesn't drain fully in the V drive compartment. You guys know if these pumps can be partially submerged?
Thanks.

they are submerisble

http://www.wakemakers.com/media/fly_...user_guide.pdf

don't know about placing them above the water line though. if you are moving, might get the water flowing, then suction might keep them running once stopped, but someone else should chime in on that one...