News Simple Fancy Featured Plain Mobile CGLL Educators working up samples with Dr. Jude on Lake Huron in 2013. Erie, Pa. students stencil storm drain message. Educators identify macroinvertebrates and other aquatic organisms gathered from the Lake Guardian. Filtering bottom-living organisms found in the sediment samples collected by PONAR bottom sampler Preparing to deploy rosette sampler, gear used in collecting multiple water samples at deep depths. Educators aboard the Lake Guardian Joel Hoffman (second row, third from right) poses with his research team of educators. Educators and researchers on Lake Ontario, 2013. Educators and researchers gather data in the Great Lakes Educators and researchers help deploy the sondes used to gather water quality data from the Great Lakes.