"One of my favorite images was recently published in a PNAS commentary by Scott Doney and Sevrine Sailley. It’s an honor to be able to contribute (visually) to the article and fun to see this image in print. I took this image of a fantastic specimen of the Southern Ocean krill,Euphausia Superba, that Debbie Steinberg’s group collected in a net tow during one of the annual Palmer Long Term Ecological Research cruises along the western Antarctic Peninsula. What I like most about the image is how this krill’s gut is glowing green from a full helping of phytoplankton. These krill graze on the diatoms that bloom abundantly during the austral summer in this region. Their fecal pellets are long, densely compacted pellets of partially digested diatoms that sink rapidly out of the euphotic zone and significantly contribute to the particle flux we collected in our drifting sediment traps. In this way, these little critters are partially responsible for sequestering carbon dioxide out of the atmosphere.
"Doney, S.C. and S.F. Sevrine, 2013: When an ecological regime shift is really just stochastic noise, Proc. Nat. Acad. Sci. USA, 110(7), 2438-2439, doi:10.1073/pnas.1222736110"