Stentor coeruleus is a very large trumpet shaped, blue to blue-green ciliate.
Owl Pellets are individually foil-wrapped and sterilized. Approximate 2" in size (med-large) P...
Vorticella is a stalked inverted bell-shaped ciliate.
Rotifers are microscopic aquatic animals of the phylum Rotifera.
Spirostomum is one of the largest of protozoa and almost big enough to see with the naked eye.