Nassulids have been found in soils, freshwater and marine habitats in Europe, Africa, Asia, North America and Antarctica. Nassula is a voracious eater of Cyanobacteria, also called blue green algae, like Anabaena or Oscillatoria!

The bright and beautiful colours characteristic of Nassula comes from the digestion of Cyanobacteria after being ingested by their basket shaped, which is a microtubular complex that looks like a little fork! When cyanobacteria are ingested, many small food vacuoles containing hydrolase enzymes are synthesized to breakdown and digest the food. The colour of those small bubbles (food vacuoles) depends of the pigments present in ingested cyanobacteria; blue-violet globules comes from eating species that have phycocyanins (Anabaena and some Oscillatoria), pink bubbles come from grazing on species that contains phycoerythrins, etc.