Surprise XD

A few days ago
I found microorganisms whose shape was heart in my Activated sludge plant experiments    XD

So I took a photo ~~

Its name is seems to be  Oikomonas socialis...I‘m not sure  (♩￢3￢)
聚屋滴虫  （ポリ屋トリコモナス？）╮(￣▽￣")╭