Marshmats are a type of colonial organism residing in the swamp regions of Vivatus.
Marshmats form layers over the swamp with three types of cell- spore cells on the top layer, which become spores and disperse, body cells in the centre, which digest food, and filter cells below, which filter organic compounds from the water. These are then digested.
Some marshmat species have another type of cell. This sits by the spore cells and carries a small barb, loaded with formic acid. This will inject into any animal landing on the mat, which will then die and be digested.