Video: https://youtu.be/yGiIvd0QWSE
Photos shows snapshots of the same individual featured in the video.
Size: see scale bar (photo #2)
Site of collection: Katsurashima Ryokuchi south pond (a freshwater habitat), Sendai, Japan
Date of collection: February 11th 2022
Weather: Sunny
Water temp.: 5.2°C
pH 6.6
Date of observation: February 20th 2022 (the collected sample in a plastic container was left near a window out of direct sunlight at room temperature until observation)
Bright field observation using a Wraymer microscope (model BX-3500TL, Osaka, Japan) equipped with a Floyd-2 HDMI ethernet digital camera (Wraymer, Osaka, Japan).
From a mix of leaf litter and stones collected 3 weeks ago at a river bay.
Video: https://www.youtube.com/watch?v=wN9h7MnjBsM