protozoans and algae are general names given to the complex single celled life one finds in ponds and wetlands. They are cells that have a nucleus and cellular organelles. Bacteria, the other branch of single celled life, are much simpler cells. Bacteria are cells without nuclei. On the tree of life, protozoans and algae are much more closely related to animals and plants than are bacteria.
In this Cyclops episode the crew attempts to film the protozoans and algae encountered as they travel a few centimeters through the weedy shallows of their pond. This is a log of what they found.