Really super images, a pleasure to look at. That Stephanoceros is amazing. I would not have thought of using (partially?) crossed polars. A revelation.
A lovely set. I can recognize choanoflagellates (6 and 7), but not sure of the genus (the colony structure got destroyed by the coverslip).
Not like I am trying to complain about the picture quality, but to my picky eye these otherwise wonderful images looks slightly overprocessed: either oversharped or too many compression artifacts + too much noise reduction, which introduced banding to some of your pics. All of that is easy to avoid.
Can you tell me which camera you use, what re-sizing algorithm you applied and what were the sharpening parameters? Just in case, only photographers-nerds like me would notice such minor things, so relax about that. Perhaps only the last image actually suffered from processing.
Starshade images by applying the camera to the eyepiece of the microscope. I use a mid-range compact Panasonic Lumix TZ8,
For processing I use GIMP.
I'll ask for directions.