Researchers Try to Unravel Mystery of Disappearing Eels Mar 20, 2004 Virginia Smith/ The Associated Press ST. AUGUSTINE, Fla. (AP) - At 3:30 a.m., Kim Tugend sweeps a dip net across the face of the Guana River dam. From the concrete ledge in the dam house, it is a steep drop to the water, and Tugend's net is long and unwieldy. Her only light comes from her tiny headlamp. From the ledge, in the dark, she can see tiny jellyfish flashing an otherworldly purple light, and the churning waters are deafening. When she pulls her net up and empties it...