Blepharisma tenue

Kahl attributes the ciliate’s rosy colour to an accumulation of purple bacteria. Recent work confirms that the cause is a purple bacterial endosymbiont: https://www.science.org/doi/10.1126/sciadv.abg4102

Collected in Mer Bleue, mid may, 2013.

body length 150 um

Olympus BHB 40X obj. (400X)