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Video: https://youtu.be/K5td3ClhH0w

Photos are snapshots of the same individual featured in the video

Cell size: 42 µm in length, 10 µm in width

Site of sample collection: Pavilion, North Pond, Katsurashima Ryokuchi (a freshwater habitat), Sendai, Japan

Date of sample collection: September 21st, 2024

Weather: Rainy

Water temp.: 22.3°C

pH 6.6

Date of observation: September 22nd, 2024 (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). The accuracy of the scale bar was confirmed by using a stage micrometer glass slide (1 div. = 10 µm; Wraymer, Osaka, Japan) at each magnification.

Magnification of all photos: 1000× (oil immersion)
Habitat: fine particulate matter attached to rocks in a stagnant part of the River des Peres.
Using stage micrometer for calibration, colony estimated to be about 33 µm wide.

Magnification of all photos: 1000× (oil immersion)
Habitat: planktonic algae from murky water in an artificial pond.
Many individuals present in sample (five pictured). Using stage micrometer for calibration, loricae estimated to be about 28 to 30 µm from tip to tip.

Wow! The green clumps were so big and fluffy, I assumed it was some kind of algae when I collected this. I was very surprised when I looked at some under the microscope and saw a huge array of ciliates. So cool!

Found on the edge of Hugo Lake.

Magnification of all photos: 1000× (oil immersion)
Habitat: planktonic algae from the water column of a small pond.
Using stage micrometer for calibration, filaments estimated to be about 1.2 to 1.4 µm wide.