nata- (Latin: to swim, swimming; floating).circumnatant: 
Swimming around.
 
contranatant, contranatation: 
1. Swimming, moving, or migrating against the current.  
2. A reference to the migrations of fish swimming against the current. denatant, denatation: 
1. Swimming, moving, or migrating with the current.  
2. A reference to fish swimming with the current. enatant, enatation: 
Floating up, coming to the surface.
 
innatant: 
Swimming or floating in or upon some liquid.
 
natant, natation, natatorial: 
1. The act or art of swimming or floating on water.  
2. Adapted for swimming. natator: 
A swimmer.
 
natatorium (singular), natatoria (plural): 
A swimming pool (or pools), particularly an indoor facility (or facilities).
 
natatory: 
Swimmilng; characterized by swimming.
 
supernatant: 
1. Swimming above, floating on the surface (as a lighter liquid on a heavier).  
          2. A reference to that part of a floating body that is above the surface.  |