Hum, and there are the Chrysophyceae. Some colonies can develop a wall and even some kind of a false tissue also. They are mostly freshwater but some are marine

Hum, and there are the Chrysophyceae. Some colonies can develop a wall and even some kind of a false tissue also. They are mostly freshwater but some are marine. Chrysophyceae are a kind of microscopic "brown algae" named the golden algae.