Night crawlers, large mature specimens. Set of 10
Set of 10 large earthworms (lumbricus)
A mixture of five or more forms, our choice.
Stentor coeruleus is a very large trumpet shaped, blue to blue-green ciliate.
Rotifers are microscopic aquatic animals of the phylum Rotifera.
Euglena is unique because it is sort of like a plant and also like an animal. It is pear shaped. It ...