Pollen is a fantastic subject to study with a microscope. The diversity of shapes of pollen grains is enormous and a lot of interesting information can be derived from it.

Amoebas building their own home.

Diatoms are brown microalgae that can be found in all freshwater and marine environments. They are an important link in the ecological cycle. In streams and rivers you often see stones covered with a brown layer that is formed by diatoms.