To anyone watching, it would appear as if Professor Sciuto was leading a procession of student-shaped ducks out to the water’s edge. She demonstrated how to properly collect viable samples of water, "Collect the sample directly into the bottle. Sample the water away from the bank and near the draw off point. Hold the bottle near base and plunge it, neck downwards, below water surface to about 30 cm depth. Turn the bottle until neck points slightly upwards with the mouth directed towards the current."