11/2 Second Observation

The first organisms that caught my attention were two worm-like organisms swimming near the top of the scum. I don't know what they were, but they appeared to be the same species according to their looks. 

The second organism that caught my eye was a nematode. It was swimming by itself, and feeding (or at least it looked like it was feeding). Nematodes have become adapted to an astounding variety of habitats (Fresh Water Biology, 459). 

There was a shell rotifer (Fresh Water Biology, 619) swimming in and out of the scum near the nematode. It almost looked like it was it was hiding from the nematode.

There were many diatoms (Fresh Water Biology, 125) all around the bottom layer near the scum. They were too manny to count, but there were many small ones and a few very large ones that looked like rectangles. The large ones were green with black centers in each cell. 

The most interesting organism I saw was a Nauplis of Cyclops (Fresh Water Biology, 744). They are flat, oval creatures, without any division of the body in the cephalothrax and abdomen, with only three pairs of a appendages (Fresh Water Biology, 744). It had very short, jittery, and quick movements. Below is a picture of the Nauplis of Cyclops. 

There was still very little activity towards the top. 

Citations:

Ward, Henry, and George Whipple. Fresh Water Biology. 1st. New York: John 

Wiley and Sons Inc., 1918.