Unidentified Unicellular Organisms: 1-50

This coming Thursday supposed to be the 7th week of my ongoing "Unidentified Unicellular Organisms" project, but I ran out of sketch book and drawing pen. I made 2 more drawings, I've drawn 50 organisms so far. I'll finish the 7th week after I buy new art supply, and I'll post it on the 8th week. Below is the result, 48 organisms from 1st to 6th week + 2 organisms from 7th week. Also enjoy the music video, I guess it's still relevant to this post.

"He’s a protozoan, He’s just a filthy protozoan..."