Stentor coeruleus specifically appears as a very large trumpet. It contains a macronucleus that looks like a string of beads that are contained within a ciliate that is blue to blue-green in color. Being that it has many myonemes, it has the ability to contract into a ball. It has the ability to swim while both fully extended or contracted.
Eating is accomplished using cilia that carry food into the ciliate's gullet.
- Rotkiewicz, Piotr. "Stentor - Droplet Photo Gallery". Droplet - Microscopy of the Protozoa.
- Wood, D. C. (1988). Habituation in Stentor produced by mechanoreceptor channel modification. Journal of Neuroscience, 8, 2254-2258 .