Found this on the underside of the coverslip.
Moved very slowly. Didn't see it eat anything.
All pics are 40X APA, 2.8X Camera Adapter, Canon 50D
This guy has a 'halo' of what appears to be celia, but I did not see them 'rowing' as the critter moved.
The suspect in question:
Over-exposed to show the 'halo' better.
After about 5 minutes of movement:
Anybody know what this is?