Water molds are the protists which get nutrients mainly by absorbing molecules from other organisms through their cell walls and cell membranes.
These organisms are absorptive in nature and they obtain nutrition either through dead and decaying matter or by living off as parasites on other organisms such as plants and fishes.
These organisms have filamentous growth because of which they were thought to be fungi however their cell wall is made up of the cellulose and, not chitin and thus they can be differentiated from fungus.
