Found many in a freshwater pond sample. Pretty fun to watch.
From a riverbank spillover puddle full of diatoms and plant detritus. Shown mostly at 100x mag. Mating pair, I assume the one in front is the female. In image 2, the male appears to have 2 eyes but it's probably just debris. Image 5 is the female. Image 6 might show a spermatophore, or that could just be debris
Mid to low intertidal, on exposed reef. Extremely small.