1. How does it move? It creeps by flowing, pushes out lobes, sits in a shell, or has stiff rays

Shell, rays, or bare?

Amoeboid cells can look like debris. Watch for the slow streaming of the inside.

1. Bare, shapeless cell flowing into lobes→ Naked amoebae
2. Inside a brown dome or a vase of sand grains, lobes come out of an opening→ Testate amoebae
3. A round cell with many stiff, straight rays→ Sun animalcules

Not sure? How to judge size by the field of view · This step looks wrong