Many areas 
of the shallow sea bottom 
are covered 
with a lush growth 
of aquatic flowering plants 
adapted 
to live submerged in seawater.
 
These plants 
are collectively called seagrasses.
 
Seagrass beds are strongly influenced
by several physical factors. 
 
The most significant is water motion: currents and waves. 
 
For any given seagrass systems exist 
in both sheltered 
and relatively open areas, 
they are subject to differing amounts 
of water motion.
 
For any given seagrass system, 
however, 
the water motion is relatively constant.
 
Seagrass meadows 
in relatively turbulent waters 
tend to form flat,
extensive carpets.
 
The seagrass beds, 
in turn, 
dampen 
wave action, 
particularly if the blades reach the water surface.
 
This damping effect can be significant 
to the point where just one meter 
into a seagrass bed, 
the wave motion can be reduced to zero.
    
     
   
 
 
   
      
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