Thraustochytrid - this image shows the fine cytoplasmic extensions which arise from the cell body. Differential interference contrast. Material from Nymph Creek and Nymph Lake, thermal sites in Yellowstone National Park, photograph by Kathy Sheehan and David Patterson. Images were taken of samples from thermal sites in Yellowstone National Park at the Thermal Biology Institute of Montana State University, August 2001. Image copyright: D. J. Patterson, image used under license to MBL (micro*scope).