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Images: A Most Ingenious Paradoxical Plankton

The marine bacteria Trichodesmium come in a rainbow of colors. Cells from three different cultures of the marine bacteria Trichodesmium have been concentrated on a filter and then popped in a buffer so the cells' pigments can be analyzed. The diversity of pigments may allow different species to use different colors of light for photosynthesis. (Photo by Annette Hynes, Woods Hole Oceanographic Institution)

Researchers aboard the R/V Kilo Moana collect seawater samples from Niskin bottles on a CTD (conductivity/temperture/depth) device. These bottles can be programmed to snap shut at specific depths. When the CTD comes back on board, MIT/WHOI graduate student Annette Hynes (At about 7 o'clcok in the photo) collected Trichodesmium from samples onto a filter and froze it in liquid nitrogen to analyze the DNA later. (Photo by Assistant Professor Zackary Johnson, University of Hawai'i at Mānoa)

MIT/WHOI graduate student Annette Hynes takes pictures of Trichodesmium through a microscope. (Photo by Tom Kleindinst, Woods Hole Oceanographic Institution)

"Team Tricho" is made up of MIT/WHOI Joint Program graduate students Annette Hynes, Elizabeth Orchard, and P. Dreux Chappell. (Photo by Tom Kleindinst, Woods Hole Oceanographic Institution)