Decripting the Mud Puddle

[Don Schaeffer]

https://www.youtube.com/watch?v=ON_QEOesUnQ
Not having a natural body of water that I can get to, I have been examining the life in artificial stagnant water cultures that reside in aquariums. The organisms I see are in a different population from aquatic samples. They are much smaller. I've had to work out techniques for making them visible. The dominant form is the cyanobacteria. Here are some examples.