Smaller than Average Biome

[Don Schaeffer]

The water in this biome is very dense with organic matter but microscopically most of the organisms are very small. There are a lot of very small circular organisms. There is also less motion than average. Many of the figures here seem not to move. Although all these biomes come from the same kinds of source, the organism populations always seem to vary.

https://youtu.be/Ey_fTuz0Ki0