Magnification of photos: 400×, 400×, 200×
Habitat: muddy water taken from a parking lot puddle, with some litter
Photo taken with a Celestron PentaView Digital Microscope. According to their website, the FOV at 400× is 150 µm. https://www.celestron.com/blogs/knowledgebase/what-is-my-digital-microscopes-field-of-view
Gonium?