This colourless freshwater protozoan rotated while swimming.
I would appreciate getting an ID.
Length 0.21 mm
Olympus BHS DIC 20x S Plan Apo, 1.25x intermediate lens, 2.5x NFK relay lens, Nikon D90, flash.

Moderators: rjlittlefield, ChrisR, Chris S., Pau
John, this guy was certainly a free-swimming stage; very active and lots of rotating; never got a shot of the oral surface but here are a couple of other images:john sp. wrote:I I'm assuming that this is part of the "mouth", but I can't work out the 3D image enough to place it.