Source : Webster's Revised Unabridged Dictionary (1913)

Submersed \Sub*mersed"\, a. [L. submersus, p. p. of submergere.
   See {Submerge}.]
   Being or growing under water, as the leaves of aquatic
   plants.

Source : WordNet®

submersed
     adj 1: beneath the surface of the water; "submerged rocks" [syn: {submerged},
             {underwater}]
     2: growing or remaining under water; "viewing subaqueous fauna
        from a glass-bottomed boat"; "submerged leaves" [syn: {subaqueous},
         {subaquatic}, {submerged}, {underwater}]