- Green algae (?) with steady internal swirling motion (possibly cysts)
- An amoebozoan in order Leptomyxida? (no, probably class Heterolobosea)
- Euglenid? (possibly the flagellate form)
- Amoeba video processing (more examples of sustained, eruptive movement characteristic of Heteroloboseans)
These ones are more obviously changing shape while gliding but otherwise look similar:Bruce Taylor wrote: ↑Tue Nov 17, 2020 9:32 pm... (the "fairly rigid-looking" one did not look particularly "rigid", to me).
One difference between this gliding form and the eruptive form (video, video) are what appear to be uniformly-sized granules packed closely (~500 nm spacing) around the periphery of the gliding cells, also visibly in the attached photos of less active cells that perhaps are in the process of transitioning to or from cysts? I saw quite a bit about perinuclear granules in amoeba but so far have not found anything about what these ones at the periphery of the cell might be or if there is a name for them.