Some Heliozoa traverse the bottom with a unique tumbling motion resulting from controlled changes in the length of the axopods. Many sessile forms with stalks are known. In sessile forms, cell division is likely to be unequal, producing a dispersal stage that may be flagellated or amoeboid.

What do Heliozoans do?

Heliozoans are spherical and predominantly freshwater and are found either floating or stalked. ... Heliozoans ingest protozoans, algae, and other small organisms and reproduce asexually by binary fission or by budding. Flagellated forms, which may be gametes, have been described in several genera.

How does Actinophrys move?

Although this microbe lacks locomotory structures like cilia and flagella, it can move slowly by motion of stiff axopodia or by floating along in the water current. The sun-like organism occupies various aquatic habitats, such as pool, pond, marsh, lake, etc.