GlassEye
Adventurer
Elros scans the marshland and sees much the same as Willow: tall grass and saturated earth, narrow channels of water and the occasional deep pool. The ranger also hears the sound of frogs croaking all around and the distinct >plop< as they jump into deeper water, he sees the tell-tale bubbles giving away their hiding places, and even a frog or two with eyes just above the murky waterline. It should be easy to get the job done.